OE Replacements: 421221, NAP421221, 1820438C1, 4333-1820438C1, 1820438, 1820438C1

Details: O-Ring, 0.139 in C/S x 11.484 in ID 3.53 mm C/S x 291.69 mm ID, Silicone 70, Series # -277

Multiple Engine Applications

Direct replacement for OE part 1820438C1

Durable silicone 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.