Engines and Components Pistons and Piston Rings

SIERRAMARINE

SEALING RING

$48.97

SKU: S08C 18-25251

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

Beginner — under 30 min

Description

The Sierra Marine 18-25251 is a sealing ring designed for use in marine engines. It replaces original equipment manufacturer part numbers OMC 3852322, 853858, 853868, and Volvo Penta 853868.

This sealing ring is compatible with Volvo SX sterndrives up to the 2006 model year. It is a direct replacement part from Sierra Marine, known for quality marine components.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

BrandSIERRAMARINE
Part NumberS08C 18-25251

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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