Dorman 674-860 Exhaust Manifold - Left

Durable Cast Iron Exhaust Manifold for Chevrolet and GMC

The Dorman 674-860 exhaust manifold is engineered to provide reliable exhaust flow for Chevrolet P30 and GMC P3500 vehicles. Constructed from cast iron with a natural finish, this exhaust manifold offers durability and consistent performance for your truck's exhaust system.

• Made from durable cast iron material
• Natural color finish for corrosion resistance
• Rectangular port shape for optimal exhaust flow
• Includes mounting hardware and gaskets for easy installation
• Compatible with Chevrolet P30 and GMC P3500 models

Product Details and Specifications

This exhaust manifold features a regular grade type cast iron construction designed to withstand high temperatures and resist cracking. The rectangular port shape ensures proper alignment and efficient exhaust gas evacuation. Included in the package are the exhaust manifold itself, one manifold gasket, one flange gasket, and three studs, providing all necessary components for a secure fit. While a heat shield is not included, the manifold's robust design supports long-term durability under typical operating conditions.

Compatible Vehicles and Applications

The Dorman 674-860 exhaust manifold is specifically compatible with Chevrolet P30 and GMC P3500 models. It is designed to replace worn or damaged exhaust manifolds that may cause exhaust leaks, reduced engine performance, or increased emissions. This part is suitable for those seeking a direct replacement that meets OEM specifications.

• Resolves exhaust leaks caused by cracked or warped manifolds
• Restores proper exhaust flow to improve engine efficiency
• Eliminates exhaust manifold gasket failures
• Addresses noise issues related to manifold damage
• Prevents exhaust fumes from entering the cabin

Installation Notes and Tips

Installation of the Dorman 674-860 exhaust manifold includes all necessary mounting hardware and gaskets, simplifying the replacement process. It is recommended to inspect the exhaust ports and surrounding components for damage or corrosion before installation. Proper torque specifications should be followed to ensure a secure and leak-free fit. Use anti-seize compound on studs to facilitate future removal.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and fitment. The 674-860 exhaust manifold undergoes quality checks to maintain durability and function. Please refer to Dorman's warranty policy for specific coverage details.