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PAI Industries · Hardware & Fasteners
321248
In stock · ships from Knoxville
This is a yellow silicone O-ring seal, a direct replacement for Caterpillar part number 3S5496.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Caterpillar
Caterpillar
Referenced as fitting multiple engine applications within the 3300 and 3400 series. Specific models and component locations should be verified against the engine's parts diagram, as it is listed as a component of multiple higher-level kits.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 4 of 4.
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It's used to create a leak-proof connection between components, commonly in cylinder heads, blocks, or attached parts on diesel engines. Silicone material is often chosen for its ability to handle high heat and maintain flexibility over time. You would replace this O-ring whenever you disassemble the mating parts during an engine rebuild or repair to prevent coolant or oil leaks.
Part Number: 321248
O-RING CAT 3S5496
Vendor: PAI Industries
Dealer: Knox Trailers
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