Dorman 674-267 Exhaust Manifold - Left

OE FIX Exhaust Manifold for GM Left Side

This Dorman exhaust manifold is a direct replacement for select Chevrolet and GMC trucks and SUVs with left-side fitment. Part number 674-267 uses high-grade ductile iron construction to better manage heat and stress than lower-grade original manifolds that can warp or crack.

Compatible with 1988-1995 Chevrolet C3500, 1991-1995 Chevrolet C2500, 1992-1995 Chevrolet C2500 Suburban, 1991-1995 Chevrolet K2500, 1992-1995 Chevrolet K2500 Suburban, 1988-1995 Chevrolet K3500, 1990-1993 Chevrolet C1500, 1991-1995 GMC C2500, 1992-1995 GMC C2500 Suburban, 1988-1995 GMC C3500, 1991-1995 GMC K2500, 1992-1995 GMC K2500 Suburban, and 1988-1995 GMC K3500, left.

• Cast iron construction with a natural finish
• Square port shape for the listed applications
• Includes gasket or seal, heat shield, and mounting hardware
• OE FIX replacement engineered for improved durability over common OE failures
• Part number 674-267 for easy identification and ordering

Built for Common Exhaust Manifold Failures

Dorman 674-267 is made for drivers replacing a cracked or warped exhaust manifold on GM full-size trucks and SUVs. The ductile iron design helps the manifold handle repeated heat cycles and engine vibration, making it a practical solution for Chevrolet C2500, Chevrolet K3500, GMC C2500, and related left-side applications. This part cross-references ATP 101130 and SKP SK674267 for the same application.

Common Problems This Part Can Address

• Exhaust leaks from a cracked manifold
• Ticking or puffing noises at cold start or under load
• Warped flange surfaces that prevent a proper seal
• Broken or missing manifold mounting points
• Heat-related failure on the left-side exhaust manifold

Installation Notes and Tips

Verify left-side placement and square port configuration before installation. Inspect the cylinder head sealing surface, fasteners, and exhaust flange for damage or corrosion, and replace worn mating components as needed. Use the included gasket, heat shield, and mounting hardware during installation, and follow factory torque specifications for the vehicle.

Quality Assurance

Dorman positions this OE FIX manifold as an upgraded replacement for original manifolds that commonly fail from heat and stress. The cast iron construction and application-specific design support a direct-fit repair for the listed Chevrolet and GMC models. Part number 674-267 is built for the confirmed fitment shown above.