Dorman 674-212 Exhaust Manifold - Left

Dorman 674-212 Exhaust Manifold for Left Side Repair

Dorman 674-212 is a cast iron exhaust manifold engineered to match the fit and function of the original manifold on specified Chevrolet, GMC, and Oldsmobile vehicles. It includes the gaskets, flange, studs, nuts, springs, and heat shield needed for a complete exhaust manifold repair on the left side.

Key Features

• Cast iron construction for durable exhaust service
• Natural finish with square port shape
• Includes gasket or seal and mounting hardware
• Heat shield included for added thermal protection
• Direct replacement design for specified left-side applications
• Part number 674-212 for easy identification

Detailed Description

This exhaust manifold is built for direct replacement on select 1996-2005 Chevrolet Blazer, Chevrolet S10, GMC Jimmy, GMC Sonoma, and Oldsmobile Bravada applications. It is precision-engineered to restore the original manifold’s fit and function, making it a practical choice for left-side exhaust manifold service on vehicles that need an OE-style replacement. This part cross-references ATP 101089 for the same application.

Use Dorman 674-212 when replacing a cracked, warped, or leaking manifold on a Chevrolet Blazer, GMC Jimmy, Chevrolet S10, or GMC Sonoma. The included gaskets and downpipe hardware support a complete repair, while the cast iron body helps maintain exhaust sealing under high heat. Part number 674-212 is also a useful reference when verifying the correct manifold for left-side fitment.

What This Part Helps Fix

• Exhaust leaks at the manifold-to-cylinder head sealing surface
• Broken or missing manifold mounting hardware
• Cracked or heat-damaged cast iron manifold housing
• Noise from a leaking left-side exhaust manifold
• Downpipe connection issues at the flange area

Installation Notes and Tips

Fits 1996-1997 Chevrolet Blazer, left. Fits 2002-2005 Chevrolet Blazer, left. Fits 1996-1997 Chevrolet S10, left. Fits 2002-2004 Chevrolet S10, left. Fits 1996-1997 GMC Jimmy, left. Fits 2002-2005 GMC Jimmy, left. Fits 1996-1997 GMC Sonoma, left. Fits 2002-2004 GMC Sonoma, left. Fits 1996-1997 Oldsmobile Bravada, left. Fits 1998-2001 Chevrolet Blazer, left, wo/Air Pump. Fits 1998-2001 Chevrolet S10, left, wo/Air Pump. Fits 1998-2001 GMC Jimmy, left, wo/Air Pump. Fits 1998-2001 GMC Sonoma, left, wo/Air Pump. Fits 1998-2001 Oldsmobile Bravada, left, wo/Air Pump.

Confirm engine configuration and air pump equipment before ordering, since 1998-2001 applications are listed without an air pump. Clean the mating surfaces thoroughly and inspect the flange connection before installation to help achieve a proper seal.

Quality Assurance

Dorman manufactures this manifold as a direct-fit replacement for specified vehicles, with materials and hardware selected to support a complete exhaust repair. Part number 674-212 is built to match original fit and function on the listed applications.