Drivetrain› Automatic Transmissions and Components
SIERRAMARINE
THRUST WASHER
SKU: S08C 18-4221
Beginner — under 30 min
Description
This part is described as a flat thrust washer and replaces OEM part numbers 13191A1 and 75282A1 for 4 & 6 inline engines with 75-150 HP. It is compatible with Mercury 75-125 hp Outboards with rubber hub props and 40-60 hp 4-Stroke BigFoot engines.
Fitment
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Specifications
| Brand | SIERRAMARINE |
| Part Number | S08C 18-4221 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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