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Home Shop By Engine Parts & Anodes Engine Components Thermostats Sierra 18-3549 | 120 degree Thermostat
Sierra 18-3549 | 120 degree Thermostat
Sierra

Sierra 18-3549 | 120 degree Thermostat

SKU
Save 23% Save 23%
$32.35
$32.35 - $32.35
$32.35
$24.99
$24.99 - $24.99
$24.99
Availability In Stock In Store 1 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.
Ship same day | Standard by 2PM EST | Express by 1PM EST
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Substitute Options

Mercury 14586 | Quicksilver 120 degree Thermostat
Mercury 14586 | Quicksilver 120 degree Thermostat $40.99 In Stock

30-Day Return Policy | See Details.

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Fits Models: 6, 7, 8, 9.9 & 15 HP, Mercury/Mariner A197112 & Later, Mariner 6,8,9.9 (2 cyl.) A197112 Later, Sea Pro 10 D038000 Later, 15 (2 cyl.) B292414 Later, 18XD, 20XD, 25XD B114231 Later, 25 ( 2 cyl.) 25 Sea Pro B238464 Later, 30 (2 cyl.) G055314 Later, 45 Jet, 50, 55, 60 (3 cyl.) G290585 Later, Mercury Sea Pro 10 D038000 Later, 15 (2 cyl.) B292414 Later, 18XD, 20XD, 25XD B114231 Later, 25 ( 2 cyl.) 25 Sea Pro B238464 Later, 30 (2 cyl.) G055314 Later, 45 Jet, 50, 55, 60 (3 cyl.) G290585 Later

Replaces Mercury 14586, Mallory 9-43014 |

18-3549 Thermostat is designed for use in Mercury marine applications. It is interchangeable with GLM 13120, Mallory 9-43014, Mercury Marine 14586, and Sears 14586. It features a temperature rating of 120°F. Each Sierra product meets or exceeds the original equipment part it replaces.

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Optimum engine temperature maximizes performance and efficiency.

A failed thermostat can cause an engine to run at outside of its optimum temperature and can adversely affect performance and efficiency. The fix can be as simple as replacing the thermostat. This Sierra thermostat has a temperature rating of 120° and is compatible with many Mercury and Sear outboards. Sierra thermostats are engineered to meet or exceed Mercury and Sear specifications to give boaters and technicians confidence of an OEM fit and function.

Key Features

  • Thermostat meets or exceeds manufacturer specifications
  • Temperature rating of 120°
  • Compatible with many Mercury and Sears outboards; use the list below or our Engine Part Selector to confirm this thermostat is right for your engine

18-3549 Application Guide

Application OEM Part Number
GLM 13120
Mallory 9-43014
Mercury Marine 14586
Sears 14586

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.

No documentation available for this item.