Dorman 674-567 Exhaust Manifold - Rear

Reliable Cast Iron Exhaust Manifold for GM Vehicles

The Dorman 674-567 exhaust manifold is engineered to provide a durable and efficient exhaust flow solution for select Buick, Chevrolet, Oldsmobile, and Pontiac models. Designed with cast iron construction and including essential mounting hardware, this exhaust manifold supports proper engine performance and emission control.

• Constructed from durable cast iron for long-lasting strength
• Natural color finish with an irregular port shape for precise fitment
• Includes mounting hardware: 3 studs, 3 nuts, and flange for secure installation
• Comes with a manifold gasket and flange to ensure a proper seal
• Equipped with a heat shield to protect surrounding components
• Compatible with Buick Achieva, Chevrolet Malibu, Pontiac Grand Am, and other GM models

Detailed Product Description

The Dorman 674-567 exhaust manifold is designed to replace the original exhaust manifold on various GM vehicles, including Buick Achieva, Chevrolet Lumina, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix. Made from cast iron, this manifold offers resistance to high temperatures and corrosion, ensuring reliable exhaust gas flow from the engine to the exhaust system. The irregular port shape matches the engine’s exhaust ports for optimal sealing and performance. This part includes all necessary mounting hardware, such as studs, nuts, and a flange, along with a gasket and heat shield to facilitate a straightforward installation and maintain proper exhaust system integrity.

Common Applications and Problem Resolution

• Replaces cracked or warped exhaust manifolds causing exhaust leaks
• Eliminates exhaust manifold gasket failures leading to noise and emissions issues
• Restores proper exhaust flow to improve engine efficiency and reduce backpressure
• Prevents heat damage to nearby engine components with included heat shield
• Addresses mounting hardware loss or damage during previous repairs

Installation Notes and Tips

Before installation, ensure the engine is cool to avoid burns. Remove the old manifold carefully, inspecting the exhaust ports and cylinder head surface for damage or debris. Use the included gasket and flange to create a proper seal, and torque the mounting hardware to manufacturer specifications. The included heat shield should be positioned correctly to protect adjacent components from heat exposure. This exhaust manifold is designed for direct replacement on compatible Buick, Chevrolet, Oldsmobile, and Pontiac models, simplifying the installation process.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit, form, and function. The 674-567 part number undergoes rigorous quality control to ensure durability and performance. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in its reliability for your GM vehicle.