Sierra 18-3632 Thermostat, Replaces Yamaha 67F-12411-01-00, Fits F75-F250 Outboards 2005 and Up

The Sierra 18-3632 is a replacement thermostat engineered for Yamaha outboard engines, designed to maintain correct engine operating temperature by regulating coolant flow through the cooling system. As the engine warms up, the thermostat opens to allow cooling water to circulate, protecting the powerhead from overheating during operation. This part is a direct replacement for the Yamaha 67F-12411-01-00 thermostat and is built to meet or exceed the performance of the original equipment part it replaces. It fits Yamaha F75-F250 outboard engines from 2005 and up. Maintaining a properly functioning thermostat is essential to preventing overheating damage to the powerhead, and replacing a worn or stuck thermostat is a routine part of outboard engine maintenance. The 18-3632 is manufactured by Sierra, a long-established name in marine engine and drive parts, with products engineered to withstand the demands of the marine environment. This thermostat is sold individually and is intended as a like-for-like replacement for the original Yamaha unit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3632
• Product Name: Thermostat
• Weight: 0.2 pounds
• UPC: 808282360818
• Fitment: Yamaha F75-F250 outboard engines, 2005 and up
• Replaces: Yamaha 67F-12411-01-00

Fitment

• Yamaha F75-F250 outboard engines, 2005 and up

Replaces (OEM)

• Yamaha 67F-12411-01-00

Frequently Asked Questions

What does the Sierra 18-3632 thermostat replace? It is a direct replacement for the Yamaha 67F-12411-01-00 thermostat.

Which Yamaha outboards does the 18-3632 thermostat fit? This thermostat fits Yamaha F75-F250 outboard engines built 2005 and up.

Is the Sierra 18-3632 an OEM part or an aftermarket replacement? The 18-3632 is a Sierra aftermarket thermostat built to meet or exceed the performance of the original Yamaha 67F-12411-01-00 equipment it replaces.

How much does the 18-3632 thermostat weigh? The Sierra 18-3632 thermostat weighs 0.2 pounds.

How many thermostats come in the package? The Sierra 18-3632 is sold as a single thermostat unit.

What is the UPC for the Sierra 18-3632 thermostat? The UPC for the Sierra 18-3632 thermostat is 808282360818.

Why would I need to replace my outboard's thermostat? A worn, stuck, or faulty thermostat can cause an outboard engine to run too hot or too cold; installing the Sierra 18-3632 restores correct coolant regulation on covered Yamaha F75-F250 engines.

Does the 18-3632 include a gasket or housing? The Sierra 18-3632 is the thermostat component itself; the dossier does not list an included gasket or housing with this part.

Who manufactures the 18-3632 thermostat? The 18-3632 thermostat is manufactured by Sierra, a supplier of marine engine and drive parts.

Can I use the 18-3632 on a Yamaha outboard older than 2005? The Sierra 18-3632 is specified to fit Yamaha F75-F250 outboards from 2005 and up; fitment for earlier model years is not confirmed.