Thermostat Housing Gasket - 18-0398-9 - Sierra
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Part # 18-0398-9
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Sierra Thermostat Housing Gaskets

Sierra has years of manufacturing expertise to ensure an exact fit for thermostat housing gaskets to your original equipment. During the manufacturing of the gaskets, a rubber and fiber material is cut to meet strict, OEM specifications. This ensures correct diameter and location of openings found on your engine while not requiring additional trimming. Purchasing the correct Sierra housing gasket can ensure a reduction in labor time.

The thermostat housing gasket comes as a complete set with precise CAD cut gasket. The typical thickness for these products can range up to 1/16". When joining the two surfaces, an exact match is not always possible. It is recommended that during installation, to clean both surfaces to the bare metal and apply a thin layer of RTV silicone sealer on both surfaces to ensure the ultimate seal.

Sierra offers these rubber and fiber gaskets, based on years of manufacturing, eliminating the guess work out of what will work on your next job. They are designed for high-temperature capable of exceeding 500 degrees Fahrenheit.
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very good
by Dennis from Marion, Iowa on July 11, 2016
Fit well, and seals without any gasket sealers.
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