Sierra 18-2844-9 Thermostat Cover Gasket for MerCruiser GM V-8 Engines (Pack of 2)

The Sierra 18-2844-9 Thermostat Cover Gasket is a high-quality aftermarket replacement gasket designed specifically for MerCruiser stern drive engines equipped with MCM/MIE GM V-8 powerplants. This essential cooling system component creates a reliable seal between the thermostat housing and engine block, preventing coolant leaks and maintaining proper engine operating temperature.

Key Features:

• Designed for MCM/MIE GM V-8 marine engines including 305 and 350 cubic inch displacements
• Meets or exceeds OEM specifications for reliable performance
• Heat-resistant materials engineered for harsh marine environments
• Pack of 2 gaskets for convenient replacement or spare
• Direct replacement for Mercury Marine part numbers 27-48818, 27-488181, and 27-48818Q01

OEM Cross-References: This gasket is interchangeable with Barr MC472748818, GLM 31510, Mallory 9-60010, and multiple MerCruiser part numbers, ensuring broad compatibility across various GM V-8 stern drive applications.

Sierra Marine is a trusted manufacturer of aftermarket marine engine parts, known for producing components that meet or exceed original equipment standards. Replace worn or damaged thermostat gaskets at the first sign of coolant seepage to prevent overheating and maintain optimal engine performance.