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PAI · Cooling System
331284
In stock · ships from Knoxville
This is a thermostat housing gasket (also called a regulator housing gasket) for Caterpillar heavy-duty diesel engines.
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Verified fitment for 5 applications
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All confirmed applications for this part number.
Caterpillar
Caterpillar
Applications are based on manufacturer and distributor data. Verify engine model and year before ordering.
Part data verified against 4 catalog sources
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It seals the thermostat housing to the engine, preventing coolant leaks. You typically replace this gasket when servicing the thermostat, water pump, or if you notice coolant seepage around the housing. It is an aftermarket replacement for Caterpillar OEM gasket 9Y2588.
Part Number: 331284
THERMOSTAT HOUSING GASKET 9Y2588
Vendor: PAI Industries
Dealer: KP Services Crossville
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