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PAI · Engine
336012
In stock · ships from Knoxville
This is a rear crankshaft seal designed for heavy-duty Caterpillar diesel engines.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 6 applications
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All confirmed applications for this part number.
Caterpillar
Freightliner
Caterpillar
Freightliner
Verify engine serial number and confirm your crankshaft requires a counter‑clockwise rotation seal before ordering.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 13 of 13.
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It installs at the back of the engine block to seal the rear main journal and prevent oil from leaking between the crankshaft and the engine housing. The seal features an integrated wear sleeve and a counter‑clockwise rotation design to handle the high heat, pressure, and RPMs common in commercial trucks and off‑highway equipment. You typically replace it during an engine overhaul or when you notice oil dripping from the bellhousing area on engines like the 3406, C15, C16, or C18.
Part Number: 336012
REAR SEAL CRANK, CAT1425868
Unit: ea
Vendor: PAI Industries
Dealer: KP Services Crossville
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