Gaskets and Seals› Engine Gaskets and Seals

SIERRAMARINE

POWERHEAD GASKET SET

$201.59

SKU: S08C 18-4427

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The SIERRAMARINE 18-4427 is a powerhead gasket set designed for Yamaha outboard engines. It is compatible with 1984-1991 Yamaha 60F and 70B models, as well as P60 and P70 engines. This gasket set also fits Yamaha F75 (2003-2004) and F80 engines.

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.

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Specifications

BrandSIERRAMARINE
Part NumberS08C 18-4427

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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