OE Replacements: ESC-0029, PAI0029, 4AX66, 21SZ149, 361SZ124, 361SZ508, 361SZ95, 365SZ15, 4AX66, 6AX528, 4AX39, 4AX149, 6AX65, 4AX18, 4103-5000811430, 4AX66X, 20705048

Details: SCREW, 1/2-13 x 1-1/4, Hex , Grade 5

Mack E6 2 Valve / 4 Valve Engine Application

Direct replacement for OE part 4AX66

Durable steel 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 hardware and fasteners are carefullly designed and feature very low tolerances. Fastener specifications are measured in a 3D environment and tested to ensure the 100% functionality.