Heating and Cooling› Thermostats, Housings and Fillers

Engineered Marine Products

BRASS INVERTED THERMOSTAT

$22.04

SKU: E051 75-00403-IR

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

Beginner — under 30 min

Description

The Engineered Marine Products 75-00403-IR is a brass inverted thermostat designed for Mercury Mariner outboards. It is compatible with 2-cylinder engines from 7.5-40 Hp, 3-cylinder engines from 70-90 Hp, 4-cylinder engines from 100-115 Hp, and V6 engines from 135-300 Hp.

This aftermarket part replaces Mercury OEM part numbers 75692, F660468, 66850, 75692B, and 62981. It also crosses with Sierra part number 18-3553, GLM part number 13010, and Mallory part number 9-43019. The thermostat is manufactured in Mexico.

Fitment

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Specifications

BrandEngineered Marine Products
Part NumberE051 75-00403-IR

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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