Dorman 674-525 Exhaust Manifold - Right

Durable Cast Iron Exhaust Manifold for GM Trucks and SUVs

The Dorman 674-525 exhaust manifold is engineered to provide reliable exhaust flow for select Cadillac, Chevrolet, and GMC vehicles. Constructed from cast iron with a natural finish, this exhaust manifold is designed to withstand high temperatures and deliver consistent performance for your Escalade, Silverado, Sierra, or Yukon models.

• Material: Heavy-duty cast iron for durability and heat resistance
• Color: Natural finish to resist corrosion
• Port Shape: Round ports for optimized exhaust flow
• Includes mounting hardware for straightforward installation
• Comes with exhaust and flange gaskets to ensure a proper seal
• Heat shield included to protect surrounding components
• Compatible with multiple GM trucks and SUVs including Escalade, Silverado, Sierra, Yukon, and more

Product Details and Specifications

The Dorman 674-525 exhaust manifold is designed specifically for use on a range of GM vehicles such as the Cadillac Escalade and Escalade EXT, Chevrolet Silverado 1500, 2500, and 3500 series, GMC Sierra 1500 through 3500 HD, Yukon and Yukon XL, as well as Chevrolet Express and GMC Savana 2500 and 3500 vans. Its cast iron construction offers strength and longevity under extreme engine conditions. The round port shape supports efficient exhaust gas evacuation, helping maintain engine performance and emissions compliance. This manifold includes all necessary mounting hardware, gaskets, and a heat shield to simplify installation and ensure a secure fit.

Common Applications and Problem Resolution

• Replacement for cracked or warped exhaust manifolds causing exhaust leaks
• Fixes manifold gasket failures that lead to exhaust noise or fumes entering the cabin
• Restores proper exhaust flow to improve engine efficiency and reduce emissions
• Addresses heat damage to the manifold or surrounding engine components
• Suitable for restoring exhaust system integrity after collision or wear

Installation Notes and Tips

Installation of the Dorman 674-525 exhaust manifold requires basic mechanical skills and tools. Ensure the engine is cool before beginning work. Remove the old manifold carefully to avoid damaging mounting surfaces. Use the included gaskets and hardware to achieve a proper seal and torque bolts to manufacturer specifications. The included heat shield should be installed to protect adjacent components from excessive heat. It is recommended to inspect related exhaust system parts during installation for wear or damage.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit, form, and function. The 674-525 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 for your Cadillac Escalade, Chevrolet Silverado, or GMC Sierra vehicle.