Exterior Components› Weatherstripping and Rubber Details
SIERRAMARINE
OUTDRIVE MOUNTING GASKET
SKU: S08C 18-2743
Easy — 1–2 hours
Description
This gasket is compatible with R, MR, Alpha One, and Gen II drives manufactured from 1983 onwards, with serial numbers starting from 6225577.
Fitment
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | SIERRAMARINE |
| Part Number | S08C 18-2743 |
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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