Fittings Hoses and Valves Fittings and Plugs

SIERRAMARINE

FITTING

$35.77

SKU: S08C 18-8958

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

Beginner — under 30 min

Description

The Sierra 18-8958 is a fitting designed for marine applications. It features hose barb attachment styles and has dual fitting sizes of 1/4 inch and 3/16 inch.

This fitting is compatible with Chrysler Small Block V8 engines (318-360ci) and Big Block V8 engines (383-440), as well as OMC In-Line 6 cylinders. It fits models from 1961 to 1971.

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.

Available on iOS & Android

Specifications

BrandSIERRAMARINE
Part NumberS08C 18-8958

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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