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Home Shop By Engine Parts & Anodes Engine Components Thermostats Sierra 18-3550 | Thermostat - 140 for Mercruiser Stern Drives
Sierra 18-3550 | Thermostat - 140 for Mercruiser Stern Drives
Sierra

Sierra 18-3550 | Thermostat - 140 for Mercruiser Stern Drives

SKU
Save 22% Save 22%
$39.55
$39.55 - $39.55
$39.55
$30.99
$30.99 - $30.99
$30.99
Availability In Stock In Store 2 Online Only - This item is stored in an external warehouse. Online orders will be shipped direct to the shipping address or available for in-store pickup typically within 1-3 days.
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Running at the right temperature maximizes performance.

A failed thermostat can cause an engine to run at outside of its optimum temperature adversely affecting performance and efficiency. The fix can be as simple as replacing the thermostat. Sierra thermostats are engineered to meet manufacturer’s specifications. This thermostat has a temperature rating of 140° and is designed for use with GM inline 6 cylinder engines (1964—1998) and Chrysler 55hp and 60hp (1977—1984) Force engines with standard cooling systems. Maximize efficiency and performance with a Sierra thermostat.

Key Features

  • Thermostat meets or exceeds manufacturer specifications
  • Temperature rating of 140°F
  • Compatible with MerCruiser 120/2.5L (s/n 2324347 & Up) w/cast iron exhaust manifolds, Mercruiser 140-3.0L (s/n 0L340999 & below) and 165

18-3550 Application Guide

Application OEM Part Number
Chrysler/Force/US Marine F84068-2, F85068-2, F84068-1, F84068
GLM 13020
Mallory 9-43020
MerCruiser Sterndrive 59078B, 59078A1, 59078

The Sierra Engine Parts Selector

In addition to thermostats, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see our Engine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.

Brand: Sierra

WARNING: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to www.p65warnings.ca.gov

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Backorder Policy: Occasionally, due to demand or supplier delays, some items may be temporarily out of stock or non-stock items. To ensure you can still get the products you need, you can order items even when they're out of stock. Our sales team will update you with the shipping lead time. Once back in stock, we promptly ship your item, and if your order includes both in-stock and backordered items, we may split the shipment. You can cancel your backorder before shipment, and request a refund to original payment method. For any inquiries, contact us at sales@freeportmarine.com.

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