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Caterpillar · Engine
2303728
In stock · ships from Knoxville
This is a fuel injector O‑ring seal used on Caterpillar engines.
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Verified fitment for 5 applications
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All confirmed applications for this part number.
Caterpillar
Caterpillar
Verify exact fitment with Caterpillar SIS or your equipment’s parts catalog. This O‑ring is used in fuel injector and fuel system connections on a wide range of Cat machines.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
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It creates a leak‑proof seal between the injector and the fuel rail, preventing fuel vapor or liquid leakage and maintaining proper system pressure. Made from FKM (fluorocarbon) rubber, it withstands high temperatures and exposure to diesel fuel and lubricants. Typically replaced when an injector is removed, during fuel system repairs, or when a fuel leak is suspected.
Part Number: 2303728
SEAL
Vendor: STOWERS MACHINERY
Dealer: KP Services Crossville
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