Dorman 674-736 Exhaust Manifold - Right

OE-Style Exhaust Manifold for Right Side Repair

Dorman 674-736 is a cast iron exhaust manifold engineered to match the fit and function of the original manifold on specified vehicles. It is built for the right side and includes the gasket, flange, heat shield, and downpipe hardware needed for a complete exhaust manifold repair.

Compatible with Chevrolet Express 2500, Chevrolet Express 3500, Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Savana 2500, GMC Savana 3500, GMC Sierra 2500 HD, GMC Sierra 3500 HD, and related Classic and 3500 applications, this manifold is a direct-fit replacement for the listed vehicles. Part number 674-736 is also cross-referenced to 101401 and 12624683 for the same application.

Key Features

• Cast iron construction for exhaust heat durability
• Natural finish with square port shape
• Right-side exhaust manifold for listed GM trucks and vans
• Includes gasket, flange, heat shield, bolts, and washers
• Built to match original fit and function on specified vehicles
• Dorman 674-736 replacement for OE-style exhaust manifold service

Detailed Description

This exhaust manifold is precision-engineered for direct replacement on the right side of the engine. The cast iron body is designed for the thermal demands of exhaust service, while the square port shape and OE-style layout support proper alignment with the factory exhaust path. Dorman 674-736 is a practical choice for restoring exhaust sealing on Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD models, as well as Express, Savana, and 3500-series applications listed in the fitment data.

The included gasket, flange, heat shield, and downpipe hardware help complete the repair with the necessary sealing and mounting components. For buyers searching for a right exhaust manifold for 2001-2016 Chevrolet Silverado 2500 HD or 2006-2016 GMC Savana 3500, this part number provides a direct-fit service solution.

What This Part Helps Fix

• Exhaust leaks at the manifold-to-cylinder head sealing surface
• Cracked or warped original manifold housing
• Broken or missing manifold mounting hardware
• Noise from a leaking right-side exhaust manifold
• Heat-related damage around the manifold area

Installation Notes and Tips

Verify engine-side and exhaust-side alignment before tightening fasteners. Clean the mating surfaces thoroughly, inspect the flange and downpipe connection, and replace any damaged studs or related exhaust components during service. Confirm right-side placement and vehicle application before installation on Chevrolet Silverado 3500 HD, GMC Sierra 3500 HD, and other listed models.

Quality Assurance

Dorman manufactures this manifold to match original fit and function on the specified vehicles. The part is built from cast iron and supplied with the sealing and mounting components listed in the package contents for a complete repair.