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Caterpillar · Engine
3E6772
In stock · ships from Knoxville
The Caterpillar 3E6772 is a water seal, often called a water grommet seal, used primarily on various CAT diesel engines.
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Caterpillar
Caterpillar
Commonly used across multiple Caterpillar engine platforms as a water system seal. Always verify exact position in CAT SIS for your specific engine serial number, as this part number is used in different locations on different models.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 4 of 4.
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Its main job is to prevent coolant leaks where pipes or components pass through the engine block or housing, keeping the cooling system sealed and free of contaminants. This seal is commonly replaced during engine overhauls, water pump service, or when diagnosing external coolant leaks. It's a small but critical rubber or rubber-coated sealing ring designed to withstand engine temperatures and pressures.
Part Number: 3E6772
WATER SEAL
Dealer: Knox Trailers
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