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.

Caterpillar · Engine
331301
In stock · ships from Knoxville
This is an aftercooler gasket for Caterpillar 3400, 3406E, C15, C16, and C18 series diesel engines.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 5 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Caterpillar
Caterpillar
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It seals the mating surfaces of the aftercooler (charge air cooler) to prevent boost leaks and contamination. Replace this gasket whenever the aftercooler is removed for cleaning or service, or if you notice a loss of intake air pressure, reduced power, or oil/fuel smells near the aftercooler housing. A proper seal is critical for engine performance and fuel efficiency.
Part Number: 331301
AFTER COOLER GASKET CAT 4N0699
Vendor: PAI Industries
Dealer: KP Services Crossville
Compatibility, alternatives, and more