1988 ATV Polaris W888528 TRAIL BOSS 250 R/ES (1988) (W888528) Crankcase and Cylinder Assembly (4914891489031A) OEM Parts | Assembly Diagram OEM Parts Finder and Diagram (Microfiche) Inspector

1
Item # 1668599
Polaris / Indian Crankcase Assembly - 3083836
Leaves Warehouse: 5 to 7 days
$445.99
          Recommended Quantity: 1

          This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

          Stock: TBD
          2
          Item # 1669606
          Polaris / Indian Pin Dowel - 3086838
          Leaves Warehouse: 5 to 7 days
          $12.99
                  Recommended Quantity: 4

                  This part has 4 locations on the diagram. It is the recommended quantity, but not a requirement.

                  Stock: TBD
                  3
                  Item # 1668370
                  Polaris / Indian Bolt & Washer - 3082096
                  Leaves Warehouse: 5 to 7 days
                  $2.49
                          Recommended Quantity: 1

                          This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                          Stock: TBD
                          4
                          MPN/SKU: 3083615
                          BOLT&WASHER ASSY.
                          Unavailable
                          $0.00
                                  Recommended Quantity: 2

                                  This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                  Stock: TBD
                                  5
                                  Item # 1668340
                                  Polaris / Indian Bolt&Washer - 3080739
                                  Leaves Warehouse: 5 to 7 days
                                  $10.99
                                          Recommended Quantity: 2

                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                          Stock: TBD
                                          6
                                          Item # 1668373
                                          Polaris / Indian Seal Oil - 3082162
                                          Leaves Warehouse: 5 to 7 days
                                          $69.99
                                                  Recommended Quantity: 2

                                                  This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                  Stock: TBD
                                                  7
                                                  MPN/SKU: 3083805
                                                  BEARING,BALL
                                                  Unavailable
                                                  $37.99
                                                          Recommended Quantity: 2

                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                          Stock: TBD
                                                          8
                                                          MPN/SKU: 3085713
                                                          STUD
                                                          Unavailable
                                                          $7.99
                                                                  Recommended Quantity: 4

                                                                  This part has 4 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                  Stock: TBD
                                                                  9
                                                                  MPN/SKU: 3083767
                                                                  PLUG, DRAIN
                                                                  Unavailable
                                                                  $5.99
                                                                          Recommended Quantity: 1

                                                                          This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                          Stock: TBD
                                                                          10
                                                                          Item # 1614556
                                                                          Polaris / Indian Gasket Aluminium - 7555998
                                                                          Leaves Warehouse: 5 to 7 days
                                                                          $1.99
                                                                                  Recommended Quantity: 1

                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                  Stock: TBD
                                                                                  11
                                                                                  MPN/SKU: 3083897
                                                                                  CYLINDER
                                                                                  Unavailable
                                                                                  $0.00
                                                                                          Recommended Quantity: 1

                                                                                          This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                          Stock: TBD
                                                                                          12
                                                                                          Item # 1668333
                                                                                          Polaris / Indian Stud - 3080283
                                                                                          Leaves Warehouse: 5 to 7 days
                                                                                          $19.99
                                                                                                  Recommended Quantity: 6

                                                                                                  This part has 6 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                  Stock: TBD
                                                                                                  13
                                                                                                  Item # 1668325
                                                                                                  Polaris / Indian Stud - 3080016
                                                                                                  Leaves Warehouse: 5 to 7 days
                                                                                                  $8.79
                                                                                                          Recommended Quantity: 2

                                                                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                          Stock: TBD
                                                                                                          14
                                                                                                          Item # 1647231
                                                                                                          Polaris / Indian Valve Check - 3086785
                                                                                                          Leaves Warehouse: 5 to 7 days
                                                                                                          $76.99
                                                                                                                  Recommended Quantity: 1

                                                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                  Stock: TBD
                                                                                                                  15
                                                                                                                  Item # 1668637
                                                                                                                  Polaris / Indian Gasket Cylinder - 3084016
                                                                                                                  Leaves Warehouse: 5 to 7 days
                                                                                                                  $69.99
                                                                                                                          Recommended Quantity: 1

                                                                                                                          This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                          Stock: TBD
                                                                                                                          16
                                                                                                                          MPN/SKU: 3082911
                                                                                                                          NUT-FLANGE(10)
                                                                                                                          Unavailable
                                                                                                                          $1.99
                                                                                                                                  Recommended Quantity: 4

                                                                                                                                  This part has 4 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                  Stock: TBD
                                                                                                                                  17
                                                                                                                                  MPN/SKU: 3083898
                                                                                                                                  HEAD,CYLINDER [No Longer Available]
                                                                                                                                  Unavailable
                                                                                                                                  $0.00
                                                                                                                                          Recommended Quantity: 1

                                                                                                                                          This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                          Stock: TBD
                                                                                                                                          18
                                                                                                                                          MPN/SKU: 3084015
                                                                                                                                          GASKET,HEAD,(CP)
                                                                                                                                          Unavailable
                                                                                                                                          $50.49
                                                                                                                                                  Recommended Quantity: 1

                                                                                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                  Stock: TBD
                                                                                                                                                  19
                                                                                                                                                  Item # 1625294
                                                                                                                                                  Polaris / Indian Nut Flange - 3082910
                                                                                                                                                  Leaves Warehouse: Same Day
                                                                                                                                                  $3.99
                                                                                                                                                          Recommended Quantity: 6

                                                                                                                                                          This part has 6 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                          Stock: TBD
                                                                                                                                                          20
                                                                                                                                                          Item # 1668424
                                                                                                                                                          Polaris / Indian Adapter Comp - 3083171
                                                                                                                                                          Out of Stock
                                                                                                                                                          $56.59
                                                                                                                                                                  Recommended Quantity: 1

                                                                                                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                  Stock: TBD
                                                                                                                                                                  21
                                                                                                                                                                  MPN/SKU: 3090180
                                                                                                                                                                  Asm., Adapter Band
                                                                                                                                                                  Unavailable
                                                                                                                                                                  $7.99
                                                                                                                                                                          Recommended Quantity: 1

                                                                                                                                                                          This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                          Stock: TBD
                                                                                                                                                                          22
                                                                                                                                                                          Item # 1637722
                                                                                                                                                                          Polaris / Indian Screw Pan Head - 3081497
                                                                                                                                                                          Leaves Warehouse: Same Day
                                                                                                                                                                          $3.99
                                                                                                                                                                                  Recommended Quantity: 1

                                                                                                                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                  Stock: TBD
                                                                                                                                                                                  23
                                                                                                                                                                                  Item # 1591722
                                                                                                                                                                                  Polaris / Indian Bolt (Socket Head) - 3081330
                                                                                                                                                                                  Leaves Warehouse: 5 to 7 days
                                                                                                                                                                                  $6.99
                                                                                                                                                                                          Recommended Quantity: 2

                                                                                                                                                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                          Stock: TBD
                                                                                                                                                                                          24
                                                                                                                                                                                          MPN/SKU: 3083929
                                                                                                                                                                                          FIN DAMPER #1
                                                                                                                                                                                          Unavailable
                                                                                                                                                                                          $24.99
                                                                                                                                                                                                  Recommended Quantity: 4

                                                                                                                                                                                                  This part has 4 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                  Stock: TBD
                                                                                                                                                                                                  25
                                                                                                                                                                                                  Item # 1668621
                                                                                                                                                                                                  Polaris / Indian Fin Damper 2 - 3083930
                                                                                                                                                                                                  Out of Stock
                                                                                                                                                                                                  $54.99
                                                                                                                                                                                                          Recommended Quantity: 2

                                                                                                                                                                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                          Stock: TBD
                                                                                                                                                                                                          26
                                                                                                                                                                                                          MPN/SKU: 3083623
                                                                                                                                                                                                          FIN DAMPER #3 [No Longer Available]
                                                                                                                                                                                                          Unavailable
                                                                                                                                                                                                          $0.00
                                                                                                                                                                                                                  Recommended Quantity: 1

                                                                                                                                                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                  Stock: TBD
                                                                                                                                                                                                                  27
                                                                                                                                                                                                                  MPN/SKU: 9999999
                                                                                                                                                                                                                  NOT AVAILABLE
                                                                                                                                                                                                                  Unavailable
                                                                                                                                                                                                                  $0.00
                                                                                                                                                                                                                          Recommended Quantity: 2

                                                                                                                                                                                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                          Stock: TBD
                                                                                                                                                                                                                          28
                                                                                                                                                                                                                          MPN/SKU: 3083770
                                                                                                                                                                                                                          GASKET, EXHAUST
                                                                                                                                                                                                                          Unavailable
                                                                                                                                                                                                                          $0.00
                                                                                                                                                                                                                                  Recommended Quantity: 1

                                                                                                                                                                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                                  Stock: TBD
                                                                                                                                                                                                                                  29
                                                                                                                                                                                                                                  MPN/SKU: 3087199
                                                                                                                                                                                                                                  Nut
                                                                                                                                                                                                                                  Unavailable
                                                                                                                                                                                                                                  $2.99
                                                                                                                                                                                                                                          Recommended Quantity: 2

                                                                                                                                                                                                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                                          Stock: TBD
                                                                                                                                                                                                                                          30
                                                                                                                                                                                                                                          Item # 1647843
                                                                                                                                                                                                                                          Polaris / Indian Washer Spring - 3080530
                                                                                                                                                                                                                                          Leaves Warehouse: 5 to 7 days
                                                                                                                                                                                                                                          $5.99
                                                                                                                                                                                                                                                  Recommended Quantity: 2

                                                                                                                                                                                                                                                  This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                                                  Stock: TBD
                                                                                                                                                                                                                                                  31
                                                                                                                                                                                                                                                  Item # 1668563
                                                                                                                                                                                                                                                  Polaris / Indian Assembly Bolt and Washer - 3083730
                                                                                                                                                                                                                                                  Leaves Warehouse: 5 to 7 days
                                                                                                                                                                                                                                                  $8.99
                                                                                                                                                                                                                                                          Recommended Quantity: 2

                                                                                                                                                                                                                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                                                          Stock: TBD
                                                                                                                                                                                                                                                          32
                                                                                                                                                                                                                                                          Item # 1668564
                                                                                                                                                                                                                                                          Polaris / Indian Mounting Rubber - 3083731
                                                                                                                                                                                                                                                          Leaves Warehouse: 5 to 7 days
                                                                                                                                                                                                                                                          $7.59
                                                                                                                                                                                                                                                                  Recommended Quantity: 2

                                                                                                                                                                                                                                                                  This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                                                                  Stock: TBD
                                                                                                                                                                                                                                                                  33
                                                                                                                                                                                                                                                                  MPN/SKU: 3083732
                                                                                                                                                                                                                                                                  COLLAR
                                                                                                                                                                                                                                                                  Unavailable
                                                                                                                                                                                                                                                                  $0.00
                                                                                                                                                                                                                                                                          Recommended Quantity: 2

                                                                                                                                                                                                                                                                          This part has 2 locations on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                                                                          Stock: TBD
                                                                                                                                                                                                                                                                          34
                                                                                                                                                                                                                                                                          MPN/SKU: 3085283
                                                                                                                                                                                                                                                                          GASKET,STARTER(NON-ASBESTOS)
                                                                                                                                                                                                                                                                          Unavailable
                                                                                                                                                                                                                                                                          $12.39
                                                                                                                                                                                                                                                                                  Recommended Quantity: 1

                                                                                                                                                                                                                                                                                  This part has 1 location on the diagram. It is the recommended quantity, but not a requirement.

                                                                                                                                                                                                                                                                                  Stock: TBD
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                                                                                                                                                                                                                                                                                  Polaris OEM Parts

                                                                                                                                                                                                                                                                                  When it comes to your Polaris Powersports vehicle, there’s no substitute for genuine OEM parts — crafted to perfection, designed for durability, and fine-tuned for peak performance. Polaris OEM parts consistently deliver top-notch quality, ensuring your machine stays at its best, no matter the terrain.

                                                                                                                                                                                                                                                                                  Take brake pads for the Polaris RZR — specially engineered to give you precise stopping power while keeping your high-performance side-by-side under control. And when we talk about the Polaris Sportsman, air filters play a critical role in keeping your engine running clean and strong, ensuring maximum efficiency and longevity. For the Polaris Ranger, spark plugs are a crucial component, guaranteeing reliable ignition and smooth performance whether you’re working hard or exploring the great outdoors.

                                                                                                                                                                                                                                                                                  Trying to force square pegs into round holes doesn’t work — so don’t settle for anything less than the exact fit for your ride. Stick with genuine Polaris OEM parts for unmatched reliability and performance.

                                                                                                                                                                                                                                                                                  Shop Polaris OEM Parts with the Diagram (Microfiche) Inspector:

                                                                                                                                                                                                                                                                                  On the path to enhancing your ride, it starts with simply selecting your riding style, year, and model. Next, the visual Diagram (Microfiche) Inspector tool, an innovative tool made easy: works like a charm in helping you to pinpoint the exact parts you need. So, whether you're riding a Polaris Ranger, a Polaris General, or a Polaris Outlaw, the Inspector will assist you to find the perfect part to keep your ride smooth.