Dorman 674-406 Exhaust Manifold - Right

Dorman 674-406 Exhaust Manifold for Ford Right Side

This Dorman exhaust manifold is built for direct replacement on select Ford trucks and SUVs with right-side fitment. It is precision-engineered to match the original manifold’s fit and function, with cast iron construction and included gaskets and downpipe hardware for a complete exhaust repair.

• Direct replacement exhaust manifold for select Ford applications
• Fits 1997-1998 Ford Expedition, right
• Fits 1997-1998 Ford F-150, right
• Fits 1997-1998 Ford F-250, right
• Cast iron construction with natural finish
• Round port shape for OE-style exhaust connection
• Includes manifold gasket and mounting hardware
• Part number: 674-406

OE-Style Fit and Construction

Built from cast iron, this manifold is made to handle exhaust heat and maintain the original mounting and port layout on the specified vehicles. The round port design and regular-grade construction support a straightforward replacement on the right side of 1997-1998 Ford Expedition, Ford F-150, and Ford F-250 models. The Dorman 674-406 is a practical choice when replacing a cracked, warped, or leaking manifold on these applications.

This part cross-references ATP 101157 for the same application.

Common Repair Issues

• Exhaust leaks at the manifold flange or gasket surface
• Cracked or warped manifold casting
• Broken or corroded manifold mounting points
• Noise from a leaking right-side exhaust manifold
• Loss of exhaust sealing after heat cycling

Installation Notes

Verify right-side fitment before installation and compare the original manifold, port shape, and mounting points to the replacement part. Clean the cylinder head and exhaust mating surfaces thoroughly, and replace damaged fasteners or hardware as needed. The included gasket and mounting hardware support a complete repair on the listed Ford Expedition, F-150, and F-250 applications.

Quality Assurance

Dorman designs this manifold to match the fit and function of the original equipment part on the specified vehicles. The included gasket and hardware help support a proper exhaust seal during replacement.