Dorman 674-732 Exhaust Manifold - Right

Durable Cast Iron Exhaust Manifold for GM Trucks and SUVs

The Dorman 674-732 exhaust manifold is engineered to provide reliable exhaust flow for a range of GM vehicles including Cadillac, Chevrolet, GMC, and Hummer models. Constructed from cast iron with a natural finish, this exhaust manifold is designed to withstand high temperatures and deliver consistent performance.

• Material: Heavy-duty cast iron for durability and heat resistance
• Color: Natural cast iron finish
• Port Shape: Round ports for optimized exhaust flow
• Includes mounting hardware for straightforward installation
• Comes with exhaust manifold gasket, flange gaskets, studs, and heat shield
• Grade Type: Regular, suitable for standard replacement needs

Product Details and Specifications

The Dorman 674-732 exhaust manifold features a robust cast iron construction that resists warping and cracking under extreme heat conditions common in exhaust systems. Its round port design ensures efficient exhaust gas evacuation, which helps maintain engine performance and emissions compliance. The natural color finish reflects the raw cast iron material, providing a corrosion-resistant surface. This manifold includes all necessary mounting hardware, such as three studs and multiple gaskets, to facilitate a complete and secure installation. Additionally, the included heat shield helps protect surrounding components from excessive heat exposure.

Compatible Vehicles and Applications

This exhaust manifold is compatible with a wide range of GM trucks and SUVs, including:

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche, Avalanche 1500, Silverado 1500, Silverado 2500, Silverado 3500, Suburban 1500, Suburban 2500, Suburban 3500 HD, Tahoe
• GMC Sierra 1500, Sierra 2500, Sierra 3500, Sierra 1500 HD, Sierra 2500 HD, Sierra 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500
• Hummer H2
• Express 1500, 2500, 3500 and Savana 1500, 2500, 3500 vans

Common Issues Addressed by This Exhaust Manifold

• Cracked or warped exhaust manifold causing exhaust leaks
• Excessive engine noise due to manifold gasket failure
• Reduced engine performance from poor exhaust flow
• Heat damage to surrounding engine components
• Failed emissions tests related to exhaust leaks

Installation Notes and Tips

Installation of the Dorman 674-732 exhaust manifold includes all necessary hardware and gaskets for a complete replacement. It is recommended to clean the mounting surface thoroughly before installation to ensure a proper seal. Torque the mounting bolts to manufacturer specifications to avoid warping. The included heat shield should be installed to protect adjacent components from heat damage. Professional installation is advised for best results.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit, form, and function. The 674-732 part number undergoes rigorous quality control to ensure durability and performance. This product includes a limited warranty against defects in materials and workmanship, providing confidence in its long-term reliability.