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PAI Industries · Engine
392091
In stock · ships from Knoxville
This is an injector sleeve kit for Caterpillar 3406E, C15, C16, and C18 diesel engines.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 4 applications
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All confirmed applications for this part number.
Caterpillar
Caterpillar
Always verify engine serial number for exact fit; covers many on-highway and industrial applications.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
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The kit includes the metal sleeve that presses into the cylinder head and the O-rings that seal it, preventing fuel and coolant from leaking into the combustion chamber. Replacing a worn or damaged sleeve restores proper injector seating and avoids misfires, coolant loss, and potential engine damage. It's a commonly replaced service item when doing injector work or chasing fuel system contamination.
Part Number: 392091
INJECTOR SLEEVE W/ O-RINGS
Vendor: PAI Industries
Dealer: KP Services Crossville
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