Dorman 674-201 Exhaust Manifold - Left

OE-Style Exhaust Manifold for Classic GM V8 Applications

This Dorman exhaust manifold is precision-engineered to match the fit and function of the original part on specified vehicles. Built from cast iron with a natural finish, it is made for left-side replacement on classic Chevrolet and GMC applications, including Chevrolet Blazer, C10 Suburban, and GMC Jimmy models.

Key Features

• Cast iron construction for durable exhaust service
• Natural finish
• Square port shape
• Includes gasket and seal components for a complete repair
• Mounting hardware included
• Direct replacement for the original manifold on listed vehicles
• Part number: 674-201

Detailed Description

Dorman 674-201 is an exhaust manifold designed for left-side installation on select 1969-1972 Chevrolet and GMC trucks and vans. It is engineered to match original fit and function, with cast iron construction and the correct square port shape for the listed applications. The package includes the manifold gasket, flange gasket, studs, nuts, and washers needed for the repair, helping restore a secure exhaust seal at the manifold and downpipe connection. This part cross-references ATP 101067 for the same application.

Compatible With 1969-1972 Chevrolet Blazer, left; 1969-1972 Chevrolet C10 Suburban, left; 1969-1972 Chevrolet K10 Suburban, left; 1969-1970 Chevrolet C20 Suburban, left; 1969-1970 Chevrolet K20 Suburban, left; 1969 Chevrolet K20 Suburban, left; 1970-1972 GMC Jimmy, left; 1970-1972 GMC G25/G2500 Van, left; 1971-1972 GMC G15/G1500 Van, left; 1971 GMC G35/G3500 Van, left; 1971 GMC G35/G3500 Van, left V8 350CID 5.7L.

Common Repair Uses

• Cracked or warped exhaust manifold replacement
• Exhaust leaks at the manifold-to-head sealing surface
• Leaks at the manifold-to-downpipe flange
• Noisy exhaust operation from a damaged manifold
• Restoring proper exhaust routing on left-side applications

Installation Notes and Tips

Verify left-side fitment, port shape, and engine application before installation. Inspect the cylinder head sealing surface and exhaust flange for damage or corrosion, and replace worn fasteners or damaged mating surfaces as needed. Use the included gaskets and downpipe hardware during assembly to help achieve a proper seal.

Quality Assurance

Dorman manufactures this manifold to match the fit and function of the original equipment part on the specified vehicles. The cast iron construction and application-specific design support a direct-replacement repair for classic Chevrolet and GMC exhaust systems. Part number 674-201 is also listed under interchange references 651191 and 3932469.