Thermostat Gasket (Pack Of 2) - Sierra Marine Engine Parts - 18-0977-9 (118-0977-9)

Sierra Marine thermostat gaskets are high-quality replacements for marine engines produced specifically for them. Sierra Marine's high-quality aftermarket replacement boat engine and drive parts will keep your watercraft afloat. When examining or replacing the thermostats on a cross-flow engine, it is highly suggested to change the gaskets to eliminate leaks. The thermostat head gasket prevents the engine's oil and coolant from leaking out. It's near the engine's cylinder head and next to the engine block. If the gasket is broken or otherwise damaged, it will start leaking. The thermostat will most likely need to be replaced if the engine overheats at idling yet operates smoothly at mid-range or wide open. The impeller is most likely to blame if the engine overheats regardless of the speed.

Key Features:

• Gasket for Sierra Thermostat
• Meets the quality of the original equipment
• GLM 33650, Evinrude/Johnson 321897, 332369, and Mallory 9-60448 are interchangeable.

Specifications:

• SKU: 18-0977-9
• UPC: 808282162214
• Weight: 0.03 LBS

Gasket Meets or Exceeds OEM Specifications, Backed by Sierra's Limited Lifetime Warranty

This product replaces:

47-0977-9, 47-09779, 47-0977, GLM33650, 808282162214, 18-0977, AP952, 9-60448, 92-33650