Description
O-Ring, 0.21 in C/S x 3.975 in ID
5.33 mm C/S x 100.97 mm ID, HNBR 72, Series # -345
- Durable HNBR construction
- Direct replacement for OE part 1090077
- Multiple Engine Applications
- Genuine PAI product including a factory 2-Year Warranty
- Quality You Can Trust – PAI has established themselves as the leading supplier of aftermarket heavy duty diesel parts, with quality standards that always meet or exceed OE standards
DETAIL – PAI O-rings are carefully designed and feature unparalleled low tolerances. O-ring specifications are measured in a 3D environment and tested to ensure the 100% functionality.
STRENGTH – PAI O-rings are made of industry leading materials and processes. Hardness ratings will vary between O-rings, but all PAI O-rings are tested to ensure product integrity, fitment, and longevity.
VARIETY – PAI is a market leader of heavy-duty diesel truck parts, and our O-rings are no exception. Our O-rings come in various materials including but not limited to Viton (Fluorocarbon), PTFE, Nitrile, Neoprene, and EPDM Rubber.


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