Dorman 674-525 Exhaust Manifold - Right

Dorman Exhaust Manifold for Right Side Repair

This Dorman exhaust manifold is precision-engineered for a direct fit on specified vehicles and built from cast iron for durable exhaust sealing. It is a practical replacement for a cracked or leaking right-side manifold on Chevrolet, GMC, Cadillac, and related GM trucks and SUVs.

Part number 674-525 includes the gaskets and downpipe hardware needed for a complete repair, helping restore proper exhaust flow and a secure seal at the manifold-to-pipe connection. It is a direct replacement for applications such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade right side.

Key Features

• Cast iron construction for strength and heat resistance
• Natural finish with round port shape
• Direct replacement design matched to original fit and function
• Includes exhaust manifold gasket, flange gasket, studs, nuts, and heat shield
• Right-side application for specified GM trucks and SUVs
• Part number 674-525 for easy identification

Detailed Description

Dorman 674-525 is an exhaust manifold replacement engineered to match the original manifold on listed vehicles. The cast iron body supports long-term durability in high-heat exhaust service, while the included gaskets and downpipe hardware help simplify a complete manifold repair. This part is a strong choice for owners addressing exhaust leaks, manifold noise, or damaged mounting surfaces on the right side of compatible GM applications.

Compatible With 1999-2002 Chevrolet Silverado 2500, right; 2001-2002 Chevrolet Silverado 2500 HD, right; 2001-2002 Chevrolet Silverado 3500, right; 2000-2002 Chevrolet Suburban 2500, right; 1999-2002 GMC Sierra 2500, right; 2001-2002 GMC Sierra 2500 HD, right; and 2000-2002 GMC Yukon XL 2500, right. This part cross-references ATP 101262 and OE-style reference 12562236 for the same application.

Common Repair Uses

• Fixing exhaust leaks at the manifold or flange
• Replacing a cracked or warped right exhaust manifold
• Restoring proper exhaust sealing after gasket failure
• Addressing ticking or puffing noises from the exhaust side
• Repairing damaged manifold hardware on GM trucks and SUVs

Installation Notes and Tips

Verify engine and emissions configuration before ordering, especially for 2003 Chevrolet Express 2500, 2003 Chevrolet Express 3500, 2003 GMC Savana 2500, and 2003 GMC Savana 3500, which are listed for California Emissions. Confirm right-side placement and compare the original manifold, port shape, and mounting points before installation. Clean the cylinder head and exhaust flange surfaces thoroughly to help the new gaskets seal correctly.

Quality Assurance

Dorman manufactures this manifold as a direct replacement part for specified vehicles, with fit and function engineered to match the original component. The included heat shield, gaskets, and mounting hardware support a complete right-side exhaust manifold repair.