OE Replacements: 121422, CUP121422, 3683814, 6L7817, 3683814

Details: O-Ring 0.21 in C/S x 1.6 in ID 5.33 mm C/S x 40.64 mm ID EPDM 75, Peroxide Cured Series # -326

Multiple Engine Applications

Direct replacement for OE part 3683814

Durable EPDM construction

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 – HDKits 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.