Exterior Components› Body Panels and Components

SIERRAMARINE

KIT THERMOSTAT

$63.58

SKU: S08C 18-43052

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

Easy — 1–2 hours

Description

The Sierra 18-43052 is a Mercury Thermostat Kit designed for various Mercury and Mariner 6-25 horsepower 2-cycle outboards. This kit features a 120°F temperature rating. It replaces Mercury part numbers 14586A3, 75692A10, 75692A11, and 75692A9.

The kit includes essential components for thermostat replacement, such as a thermostat gasket (18-0182), a thermostat cover gasket (18-0323), and the thermostat itself (18-3549).

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 18-43052

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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