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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
331415
In stock · ships from Knoxville
This is a front air compressor seal for Caterpillar diesel engines, including 3406E, C15, C16, and C18 series.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 5 applications
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All confirmed applications for this part number.
Caterpillar
Caterpillar
Always verify exact application by engine serial number and compressor model; this seal fits the front position.
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 compressor to prevent air and oil leaks. Typically replaced when the compressor shows signs of leakage or during a rebuild. PAI 331415 is a direct aftermarket replacement for Caterpillar part number 1100004.
Part Number: 331415
SEAL COMP, CAT1100004
Unit: ea
Vendor: PAI Industries
Dealer: KP Services Crossville
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