Dorman 674-558 Exhaust Manifold - Left

Durable Cast Iron Exhaust Manifold for Ford, Lincoln, Mercury

The Dorman 674-558 exhaust manifold is engineered to provide reliable exhaust flow for select Ford, Lincoln, and Mercury vehicles. Designed with cast iron construction and including essential mounting hardware, this exhaust manifold ensures a secure fit and long-lasting performance for your Crown Victoria, Grand Marquis, or Town Car.

• Constructed from durable cast iron for strength and heat resistance
• Natural color finish with round port shape for optimal exhaust flow
• Includes exhaust manifold gasket, 2 studs, and 2 nuts for complete installation
• Compatible with Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis
• Regular grade type designed for standard replacement needs

Product Details and Specifications

This Dorman exhaust manifold (part number 674-558) is made from cast iron, a material known for its ability to withstand high temperatures and resist warping over time. The natural finish maintains the integrity of the manifold without additional coatings. Featuring a round port shape, it matches the exhaust ports of the specified vehicle models to ensure proper sealing and exhaust flow. The package includes the exhaust manifold itself, one manifold gasket, two studs, and two nuts, providing all necessary hardware for installation. Note that a heat shield is not included with this part.

Compatible Vehicles and Applications

This exhaust manifold is compatible with the following vehicles:

• Ford Crown Victoria
• Lincoln Town Car
• Mercury Grand Marquis

It is designed to replace worn or damaged exhaust manifolds on these models, restoring proper exhaust system function and reducing potential leaks.

Common Issues Addressed by This Exhaust Manifold

• Exhaust leaks causing noise and reduced engine efficiency
• Cracked or warped manifolds due to heat stress
• Poor engine performance related to exhaust backpressure
• Failed manifold gaskets leading to exhaust fumes entering the cabin
• Corrosion or rust damage compromising exhaust integrity

Installation Notes and Tips

When installing the Dorman 674-558 exhaust manifold, ensure all old gasket material is thoroughly cleaned from the mounting surface to prevent leaks. Use the included gasket, studs, and nuts to secure the manifold firmly. Torque specifications should be followed according to the vehicle manufacturer’s guidelines. Since a heat shield is not included, verify if your vehicle requires one and reuse the original if applicable.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit and function. The 674-558 part undergoes quality checks to ensure durability and performance. This product includes a limited warranty covering defects in material and workmanship, providing confidence in your replacement part.