Exterior Components› Body Panels and Components

SIERRAMARINE

THERMOSTAT KIT - FRESH WATER COOLED

$64.92

SKU: S08C 18-3619

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

Moderate — 2–4 hours

Description

The Sierra Marine 18-3619 is a mechanical thermostat kit designed for fresh water cooled applications. It operates at a temperature rating of 150°F (66°C) and includes a thermostat, o-ring, and gasket. This kit is a direct replacement for Volvo Penta Thermostat 3831426.

Fitment

Fitment Guaranteed

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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 18-3619

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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