OE Replacements: 121384, CUP121384, 3684384, 3684384

Details: O-Ring 0.139 in C/S x 4.859 in ID 3.53 mm C/S x 123.42 mm ID EPDM 70, Black Series # -249

Multiple Engine Applications

Direct replacement for OE part 3684384

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.