Engines and Components Oiling Systems

SIERRAMARINE

OIL FILTER

$23.19

SKU: S08C 18-7921

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

Beginner — under 30 min

Description

The SIERRA 18-7921 is a marine oil filter designed for optimal performance in harsh marine environments. It features an anti-drain-back valve and is constructed with premium grade materials for durability and corrosion resistance.

This oil filter also boasts an epoxy coating and a heavy-wall steel canister to further protect against corrosion. Its high-efficiency filter media meets or exceeds original equipment specifications for filtration quality, ensuring clean oil circulation for your engine.

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 18-7921

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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