Dorman 680-104 Exhaust Manifold Nut

Exhaust Manifold Nut for OE-Style Service

Dorman 680-104 is a brass exhaust manifold nut built to match the fit and function of the original fastener on specified vehicles. It is engineered for reliable performance in exhaust hardware service and is a direct-fit option for select Chevrolet Corvette applications.

• Brass construction for exhaust hardware use
• Hex nut design with 9/16 in. hex size
• SAE coarse internal threads with clockwise thread direction
• Ball seat design for the specified exhaust connection
• Standard-grade fastener with no locking feature
• Direct replacement for select Chevrolet Corvette exhaust pipe applications

Fitment Details

• Fits 1953-1982 Chevrolet Corvette, N/A — Nut Only; Exhaust Pipe

Application and Function

This exhaust manifold nut is used in exhaust pipe and manifold fastening service where the original hardware has worn, corroded, or lost its ability to hold securely. It is a practical replacement for Chevrolet Corvette exhaust hardware service and supports proper reassembly of the exhaust connection.

• Replaces a damaged or missing exhaust manifold nut
• Addresses stripped or worn internal threads
• Helps restore secure exhaust pipe fastening
• Supports service on corroded OE exhaust hardware
• Provides a direct replacement path for 1953-1982 Chevrolet Corvette exhaust work

Installation Notes and Tips

Verify thread direction, thread type, seat type, and hex size before installation. Clean the mating surfaces and inspect the exhaust stud or bolt for wear before tightening. This part cross-references 838780 for the same application.

Quality Assurance

Dorman designs this exhaust manifold nut to match the original part’s fit and function on specified vehicles. The brass construction and OE-style dimensions support consistent service replacement for the listed Chevrolet Corvette applications. Part number 680-104 is built for straightforward exhaust hardware replacement.