Dorman 674-500 Exhaust Manifold - Left or Right

Dorman 674-500 Exhaust Manifold for Corvette

Dorman 674-500 is a cast iron exhaust manifold engineered to match the fit and function of the original part on specified Chevrolet Corvette applications. It includes the gaskets and downpipe hardware needed for a complete exhaust manifold repair on the listed vehicles.

Key Features

• Cast iron construction for exhaust manifold durability
• Natural finish with square port shape
• Includes gasket and seal components for the repair
• Mounting hardware included for installation
• Direct-fit replacement for select Chevrolet Corvette left and right positions
• Cross-reference part numbers: 101061, 3846559

Detailed Description

This Dorman exhaust manifold is built for direct replacement service on select Chevrolet Corvette models, including 1964-1967 and 1970-1971 applications. It is available for the left side on 1964-1965 Chevrolet Corvette with left side square bracket, the right side on 1964-1965 Chevrolet Corvette without left side square bracket, and the left side on 1966-1967 and 1970-1971 Chevrolet Corvette with square bracket. The cast iron design supports OE-style fitment, while the square port shape and included sealing components help complete the repair with the correct mating surfaces and hardware. Part number 674-500 is a practical choice when replacing a cracked, warped, or leaking manifold on a Chevrolet Corvette exhaust system.

Common Repair Uses

• Exhaust manifold leak at the cylinder head flange
• Cracked or heat-damaged original manifold
• Warped sealing surface causing exhaust noise
• Broken or missing manifold mounting hardware
• Downpipe connection service during exhaust repair

Installation Notes

Verify engine-side and bracket configuration before installation, especially on 1964-1965 Chevrolet Corvette applications where left and right fitment differs by bracket setup. Inspect the cylinder head and downpipe mating surfaces for damage, and replace any worn fasteners or sealing surfaces as needed. Use the included gaskets and hardware during assembly, and follow factory torque specifications for the vehicle.

Quality Assurance

Dorman manufactures this manifold to match the fit and function of the original part on the specified vehicles. The part is built as a regular-grade replacement with the necessary sealing components and mounting hardware included for the repair.