Engines and Components› Oiling Systems

SIERRAMARINE

OIL SEAL

$26.68

SKU: S08C 18-0531

In Stock
In Stock
Ships by Jun 18
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Sierra 18-0531 Oil Seal is designed for use on Mercruiser I/O and Mercury/Mariner Outboard Engines. It has a shaft size of 0.790 inches, an outer diameter of 1.880 inches, and a width of 0.248 inches. This oil seal is interchangeable with GLM 85810 and Mercruiser part numbers 26-59564 and 26-72785.

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 18-0531

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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