Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

PAI · Engine
331254
In stock · ships from Knoxville
This is a head gasket seal for Caterpillar 3400 series diesel engines, including the 3406, 3406E, C15, C16, and C18.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 6 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Caterpillar
Caterpillar
Quantity 24 per engine; referenced as item 24 in the head gasket assembly drawing (item 14 in an alternate drawing).
Part data verified against 5 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It seals the joint between the cylinder head and the engine block to keep coolant and combustion gases separate. The part is typically replaced during an engine overhaul or whenever a head gasket is serviced. It is identified as item 24 in the factory head gasket assembly drawing, and 24 pieces are required for a complete installation on one engine.
Part Number: 331254
WATER / HEAD GASKET SEAL 24 PER ENGINE 3E6772
Dealer: Post Onsite
Compatibility, alternatives, and more