Dorman 680-104CD Exhaust Manifold Nut

Dorman 680-104CD Exhaust Manifold Nut

Dorman 680-104CD is a brass exhaust manifold nut built to match the original fit and function on specified vehicles. It is a direct replacement for exhaust pipe and manifold hardware on classic Chevrolet applications, including the Corvette.

• Brass construction for corrosion resistance in exhaust hardware applications
• Hex nut design with 9/16 hex size
• SAE coarse-thread, clockwise thread direction
• Ball seat design for the specified exhaust connection
• Inside thread location with standard nut grade
• Fits 1953-1982 Chevrolet Corvette, N/A; Nut Only; Exhaust Pipe

Fitment and application details

This exhaust manifold nut is designed for Chevrolet Corvette exhaust hardware service across 1953-1982 model years. Use Dorman 680-104CD when replacing worn or damaged exhaust manifold nut hardware on the exhaust pipe connection. The brass finish and standard hex profile support straightforward service on the specified application.

This part cross-references 838780 for the same application.

Common issues this part can address

• Stripped or rounded exhaust manifold nut threads
• Corroded or seized exhaust pipe fasteners
• Loose exhaust connection hardware at the manifold
• Replacement needs during exhaust leak repair
• Service work on original-style Chevrolet Corvette exhaust hardware

Installation notes and tips

Verify thread direction, thread type, seat style, and hex size before installation. Clean the mating threads and inspect the exhaust pipe connection for damage before installing the nut. Because this is a hardware-only replacement, confirm the existing exhaust fastener setup matches the specified Corvette application.

Quality assurance

Dorman engineers this exhaust manifold nut to match the fit and function of the original part on specified vehicles. It is made from quality materials for reliable performance in exhaust service.