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Sierra 18-3605 Thermostat Kit for Mercury/Mariner EFI Outboard Engines

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3605
14 reviews
Sale Price

$92.67

In Stock (10+)

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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 18-3605 thermostat kit is designed for Mercury and Mariner 225 and 250 EFI outboard engines. This complete replacement kit ensures proper engine temperature regulation for optimal performance and longevity.

Key Features:

  • 143°F (62°C) operating temperature for precise cooling system control
  • Complete kit includes thermostat, gasket, and thermostat cover
  • Direct replacement for Mercury/Mariner OEM part numbers
  • Engineered to meet or exceed OEM specifications
  • Designed specifically for 225 and 250 EFI outboard models

Sierra Marine is a trusted manufacturer of premium aftermarket marine parts. This thermostat kit provides reliable temperature regulation to protect your engine from overheating while ensuring efficient warm-up and optimal operating temperature. The included gasket and cover make this a complete replacement solution for routine maintenance or emergency repairs.

USER FRIENDLY GREAT PRICE FAST SHIPPING HIGHLY RECOMMENDED PEOPLE TO DEAL WITH

Good description of parts. Now to hope what I get fits.

So far so good

Smooth ordering process

It was quick and easy so far.

Wouldn't take first debit card applied.

Great !

good seller

helped me find the exact one i needed

Quick and easy

Great and easy to order.

Very easy to use website. That is hard to find these days. Thank you for keeping it simple.

Great price on parts, shipping a tad high but still okay

quick and easy so far

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