Mercury Gasket (Thermostat) 8M0238323

Mercury Thermostat Gasket, GM V6 & V8 2-Piece Thermostat Housing 8M0238323 is a genuine OEM replacement gasket designed for older-style 2-piece thermostat housings on compatible MerCruiser MCM and MIE GM V6 and V8 engines. A properly sealing thermostat gasket helps prevent coolant leaks while maintaining correct engine operating temperature.

Compatible with the following (2-piece thermostat housing):

• MerCruiser MCM GM V6 
• MerCruiser MCM GM V8 
• MerCruiser MIE GM V6 
• MerCruiser MIE GM V8 

Manufactured to Mercury Marine's original specifications, this thermostat gasket provides the correct fit and sealing performance during thermostat replacement or cooling system service. Replacing the gasket whenever the thermostat housing is removed helps prevent coolant leaks and ensures reliable operation of the engine's cooling system.

This gasket supersedes Mercury part numbers 27-8M0204687 and 27-806871, making it the current OEM replacement for compatible applications.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.