Dorman 674-186 Exhaust Manifold - Rear

Durable Cast Iron Exhaust Manifold for Ford Vehicles

The Dorman 674-186 exhaust manifold is engineered to provide reliable exhaust flow for a range of Ford trucks and vans. 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
• Port Shape: Rectangle design for optimal exhaust flow
• Color: Natural cast iron finish
• Mounting Hardware Included: Yes, includes 4 studs and 2 nuts
• Grade Type: Regular quality standard
• Package Contents: Exhaust manifold, 4 studs, 2 nuts

Product Details and Specifications

The Dorman 674-186 exhaust manifold features a rectangular port shape that matches the exhaust ports on compatible Ford engines, ensuring a proper seal and efficient exhaust gas evacuation. Made from cast iron, this manifold offers resistance to warping and cracking under extreme heat conditions common in exhaust systems. The natural color finish indicates the raw cast iron material, which can be coated or painted during installation if desired. This part comes with mounting hardware, including studs and nuts, to facilitate installation.

Compatible Ford Models and Applications

This exhaust manifold is compatible with a variety of Ford trucks and vans, including the Bronco, F-150, F-250, F-350, and multiple Econoline models such as the E-150, E-250, and E-350, including their Club Wagon variants. The Dorman 674-186 is designed to meet the exhaust manifold requirements for these vehicles, providing a direct replacement option for worn or damaged manifolds.

• Replaces cracked or leaking exhaust manifolds
• Addresses exhaust leaks causing noise or reduced engine efficiency
• Restores proper exhaust flow to improve engine performance
• Prevents exhaust fumes from entering the cabin
• Helps maintain emissions compliance by ensuring proper exhaust routing

Installation Notes and Tips

When installing the Dorman 674-186 exhaust manifold, ensure the mating surfaces are clean and free of old gasket material. Although this manifold does not include a gasket, it is recommended to use a new exhaust manifold gasket to ensure a proper seal. Torque the mounting hardware to manufacturer specifications to avoid leaks or damage. Inspect the exhaust ports and surrounding components for any signs of damage or corrosion before installation.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit and function. The 674-186 part number undergoes quality checks to ensure durability and performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts. Consult product documentation or the manufacturer for exact warranty terms.