Dorman 674-736 Exhaust Manifold - Right

Durable Cast Iron Exhaust Manifold for Chevrolet and GMC Trucks

The Dorman 674-736 exhaust manifold is engineered to provide reliable exhaust flow for heavy-duty Chevrolet and GMC trucks. Designed with a natural cast iron finish and square port shape, this manifold ensures a precise fit and long-lasting performance for models like the Silverado 2500 HD and Sierra 3500.

Key Features of the Dorman 674-736 Exhaust Manifold

• Constructed from durable cast iron for strength and heat resistance
• Natural color finish maintains original equipment appearance
• Square port shape designed for optimal exhaust flow and sealing
• Includes exhaust manifold gasket, flange, bolts, and washers for installation
• Heat shield included to protect surrounding components from excessive heat
• Compatible with Chevrolet Express 2500/3500, GMC Savana 2500/3500, Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 models

Detailed Description of the Dorman 674-736 Exhaust Manifold

This exhaust manifold is crafted from cast iron, a material known for its durability and ability to withstand high temperatures generated by engine exhaust gases. The natural finish preserves the original look while resisting corrosion. The square port shape matches the cylinder head ports precisely, ensuring a tight seal and efficient exhaust gas flow. The included heat shield helps reduce heat transfer to nearby engine components, enhancing overall engine bay safety. The package contains all necessary mounting hardware, including a manifold gasket, flange, bolts, and washers, facilitating a straightforward replacement process.

Common Applications and Issues Addressed

• Replacement for cracked or warped exhaust manifolds causing exhaust leaks
• Restores proper exhaust flow to improve engine efficiency and reduce emissions
• Eliminates exhaust manifold noise and rattling due to damaged or missing heat shields
• Prevents exhaust fumes from entering the cabin by ensuring a secure seal
• Supports heavy-duty use in Chevrolet and GMC 2500 and 3500 series trucks

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Clean the cylinder head surface thoroughly to ensure proper gasket sealing
• Torque bolts to manufacturer specifications to prevent leaks and damage
• Inspect and replace any damaged mounting hardware if necessary
• Verify compatibility with your specific Chevrolet or GMC model year before installation

Quality Assurance and Warranty Information

Dorman manufactures this exhaust manifold to meet or exceed OEM standards for fit, form, and function. The 674-736 part is tested for durability and heat resistance to ensure reliable performance under demanding conditions. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation for exact warranty terms.