Beginner — under 30 min
Description
This O-ring is interchangeable with numerous OEM and aftermarket part numbers, including Chrysler/Force/US Marine 25-35276, Johnson/Evinrude Outboard 310584, Mallory 9-76530, Mercury Marine 25-20365 and 25-35276, OMC Stern Drive 310584, and Volvo Penta 3852089. It also replaces the OEM part number 0310584.
Fitment
Fitment Guaranteed
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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 18-7135 |
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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