Dorman 674-157 Exhaust Manifold - Left

Dorman Exhaust Manifold for GM Trucks and SUVs

This Dorman exhaust manifold is precision-engineered to match the fit and function of the original manifold on specified vehicles. Built from cast iron with a natural finish, it is made for the left side and includes the gaskets, heat shield, and downpipe hardware needed for a complete exhaust repair.

• Cast iron construction for durable exhaust service
• Natural finish with square port shape
• Includes heat shield, gaskets, and mounting hardware
• Direct replacement for the left-side exhaust manifold
• Fits a wide range of Chevrolet and GMC full-size trucks and SUVs

Fitment and Application Details

Compatible with 1988-1995 Chevrolet C1500, left; 1992-1995 Chevrolet C1500 Suburban, left; 1988-1995 Chevrolet C2500, left; 1992-1995 Chevrolet C2500 Suburban, left; 1988-1995 Chevrolet C3500, left; 1995 Chevrolet G10, left; 1995 Chevrolet G20, left; 1988-1995 Chevrolet K1500, left; 1992-1995 Chevrolet K1500 Suburban, left; 1988-1995 Chevrolet K2500, left; 1992-1995 Chevrolet K2500 Suburban, left; 1988-1995 Chevrolet K3500, left; 1995 Chevrolet Tahoe, left; 1988-1995 GMC C1500, left; 1992-1995 GMC C1500 Suburban, left; 1988-1995 GMC C2500, left; 1992-1995 GMC C2500 Suburban, left; 1988-1995 GMC C3500, left; 1995 GMC G1500, left; 1995 GMC G2500, left; 1988-1995 GMC K1500, left; 1992-1995 GMC K1500 Suburban, left; 1988-1995 GMC K2500, left; 1992-1995 GMC K2500 Suburban, left; 1988-1995 GMC K3500, left; 1992-1995 GMC Yukon, left; and 1992-1994 Chevrolet Blazer, left.

Part number 674-157 is also referenced as 674157 in interchange listings. This part cross-references ATP 101064 and SKP SK674157 for the same application.

Common Repair Uses

• Replacing a cracked or warped exhaust manifold
• Restoring exhaust sealing at the cylinder head
• Addressing exhaust leaks that create ticking or hissing noises
• Repairing broken flange or downpipe connection points
• Correcting heat-related damage around the manifold area

Installation Notes and Quality

Verify left-side placement and confirm square-port manifold configuration before installation. Clean the mating surfaces thoroughly, inspect the cylinder head and exhaust flange for damage, and follow factory torque specifications during assembly. The included gaskets and downpipe hardware support a complete repair on the listed Chevrolet and GMC applications.

Dorman manufactures this manifold to match original fit and function on specified vehicles. Part number 674-157 is built for direct replacement use on the listed Chevrolet C1500, K1500, Tahoe, GMC C1500, Yukon, and related GM truck and SUV platforms.