Dorman 674-939 Exhaust Manifold

Durable Cast Iron Exhaust Manifold for Pontiac and Toyota Models

The Dorman 674-939 exhaust manifold is engineered to provide reliable exhaust flow for select Pontiac and Toyota vehicles. Designed with durable cast iron and including essential mounting hardware, this exhaust manifold ensures a secure fit and long-lasting performance for your Corolla, Matrix, or Vibe.

• Constructed from robust cast iron material for heat resistance and durability
• Natural color finish with round port shape for optimal exhaust flow
• Includes mounting hardware, gasket, flange, bolts, and springs for complete installation
• Equipped with a heat shield to protect surrounding components
• Compatible with Pontiac and Toyota Corolla, Matrix, and Vibe models
• Part number 674-939 for precise identification and fitment

Product Details and Specifications

This exhaust manifold by Dorman is made from cast iron, a material known for its ability to withstand high temperatures and resist cracking under thermal stress. The natural finish maintains the integrity of the manifold without additional coatings. Featuring a round port shape, it facilitates efficient exhaust gas flow from the engine to the exhaust system. The package includes all necessary mounting hardware such as a manifold gasket, flange, bolts, and springs, simplifying the installation process. Additionally, the included heat shield helps to reduce heat transfer to nearby engine components, enhancing overall engine bay safety.

Compatible Vehicles and Applications

This exhaust manifold is compatible with specific Pontiac and Toyota models, including the Toyota Corolla, Matrix, and Pontiac Vibe. It is designed to meet the OEM specifications for these vehicles, ensuring proper fit and function. Use part number 674-939 when searching for replacement exhaust manifolds for these models to guarantee compatibility.

• Replaces worn or cracked exhaust manifolds causing exhaust leaks
• Addresses exhaust manifold gasket failures leading to noise or emissions issues
• Restores proper exhaust flow to improve engine performance and efficiency
• Prevents heat damage to surrounding engine components with included heat shield
• Eliminates exhaust odors and fumes entering the cabin

Installation Notes and Tips

Installation of the Dorman 674-939 exhaust manifold should be performed with care to ensure a proper seal and fit. Use the included gasket and mounting hardware to secure the manifold tightly to the engine block. It is recommended to inspect the exhaust ports and clean any debris before installation. Torque bolts to manufacturer specifications to avoid leaks or damage. The included heat shield should be positioned correctly to protect adjacent components from heat exposure.

Quality Assurance and Warranty Information

Dorman manufactures this exhaust manifold to meet or exceed OEM standards for durability and fitment. The part undergoes quality control inspections to ensure reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to Dorman’s warranty policy for complete terms and conditions.