SIERRAMARINE 180323 Thermostat Gasket

The SIERRAMARINE 180323 Thermostat Gasket is a replacement sealing component designed to support proper installation of a compatible marine thermostat. Positioned between the thermostat housing and its mating surface, the gasket helps create a reliable seal when the cooling system is assembled according to the applicable service procedures. A correctly fitted gasket helps reduce the risk of coolant leakage and supports the intended operation of the thermostat housing.
Use the SIERRAMARINE 180323 as a service replacement when the original thermostat gasket is worn, compressed, damaged, or removed during thermostat maintenance. Replacing the gasket during service can help restore the sealing interface and prevent reusing a sealing component that may no longer provide dependable contact. Before installation, compare the replacement gasket with the removed part and confirm compatibility with the engine, thermostat housing, and application requirements.
For best results, prepare the mating surfaces by removing residue and checking for damage before assembly. Install the gasket in its proper orientation and follow the manufacturer’s recommended procedures for thermostat replacement, fastener tightening, coolant handling, and system bleeding. After service, inspect the area for signs of leakage and verify that the cooling system operates as intended. The SIERRAMARINE brand and part number 180323 provide a clear reference when identifying this thermostat gasket for marine maintenance and repair.

Features:

• Replacement thermostat housing gasket for compatible marine applications

• Helps seal the mating surfaces around the thermostat housing

• Suitable for replacing a gasket that is worn, damaged, or removed during service

• SIERRAMARINE part number 180323 for convenient product identification