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.

MHC Kenworth · Cooling System
3931264
In stock · ships from Knoxville
This is an aftercooler gasket used to seal the connection between the aftercooler housing and the engine intake manifold or cylinder head.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It prevents compressed air from leaking out and keeps coolant and oil paths separate, which is critical for proper charge air cooling and engine performance. A deteriorated gasket can cause boost leaks, coolant contamination, or overheating. You typically replace it whenever the aftercooler is removed for cleaning or repair.
Part Number: 3931264
AFTERCOOLER GASKET
Vendor: MHC Kenworth
Dealer: KP Services Crossville
Compatibility, alternatives, and more