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Sierra 18-3640 Thermostat for Mercury Marine 40-60HP Outboards

Manufacturer

Picture for manufacturer Sierra

Part Number

118-3640
6 reviews
Sale Price

$19.69

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3640 is a premium-quality aftermarket replacement thermostat designed for Mercury Marine outboard engines. This thermostat is engineered to meet or exceed OEM specifications, ensuring reliable temperature regulation for your marine engine.

Key Features:

  • Direct replacement for Mercury OEM part number 8M0168892
  • Fits Mercury 40-60HP outboard engines (serial number 1C050252 and up)
  • Engineered to meet or exceed original equipment manufacturer specifications
  • Designed to withstand harsh marine environments
  • Ensures proper engine operating temperature for optimal performance and efficiency

Sierra has been manufacturing premium marine engine parts for over 50 years, gaining the confidence of engine manufacturers and boat builders worldwide. This thermostat is precision-engineered to fit right the first time and restore your engine's cooling system to factory performance standards.

real smooth

Very easy

Quality of my item was not as original, transaction was good, price was high for the item!

Extremely satisfied with my product. It arrived without any issues. The box was marked and packaged very well to ensure there would be no damage since the item was fragile. I had a great experience from start to finish. Will definitely order again from Boatplicity.

The box came beatup and 2 big holes in it..but exhaust was un harmed. Not their fault since they had it shipped from another vendor.

Great price and delivery

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