Dorman 674-184 Exhaust Manifold - Left

Dorman 674-184 Exhaust Manifold for Left Side Repair

Dorman 674-184 is a cast iron exhaust manifold engineered to match the fit and function of the original manifold on specified vehicles. It includes the manifold gasket and downpipe hardware needed for a complete exhaust manifold repair on the left side.

• Cast iron construction for durable exhaust service
• Natural finish with rectangle port shape
• Includes gasket and mounting hardware
• Direct-fit replacement for specified Ford, Lincoln, and Mercury applications
• OE-style replacement for left-side exhaust manifold service

Vehicle Fitment

• Fits 1987-1991 Ford LTD Crown Victoria, left.
• Fits 1987-1991 Mercury Colony Park, left.
• Fits 1986-1991 Mercury Grand Marquis, left.
• Fits 1986-1990 Lincoln Town Car, left.
• Fits 1986-1988 Ford Thunderbird, left.
• Fits 1986-1988 Mercury Cougar, left.
• Fits 1986-1987 Lincoln Continental, left.
• Fits 1986-1987 Lincoln Mark VII, left, wo/High Output Engine.
• Fits 1986 Ford LTD, left.

Detailed Description

This Dorman exhaust manifold, part number 674-184, is built for left-side replacement on select Ford, Lincoln, and Mercury vehicles. It is precision-engineered to align with the original manifold’s fit and function, helping restore proper exhaust routing on applications such as the Ford LTD Crown Victoria, Mercury Grand Marquis, and Lincoln Town Car. The cast iron body and rectangle port design support a factory-style repair, while the included gasket and downpipe hardware help complete the installation.

This part cross-references Monroe Shocks & Struts (e.g., 101047, E6SZ9431A) for the same application.

Common Repair Issues

• Cracked or warped exhaust manifold
• Exhaust leaks at the manifold-to-cylinder-head sealing surface
• Broken or missing manifold mounting hardware
• Damaged gasket sealing at the exhaust outlet
• Noisy exhaust operation from the left side of the engine

Installation Notes and Tips

Verify engine configuration before ordering, especially for 1986-1987 Lincoln Mark VII applications listed without High Output Engine. Inspect the cylinder-head sealing surface, exhaust flange, and fasteners before installation. Replace any damaged mating components and follow factory torque specifications during assembly.

Quality Assurance

Dorman manufactures this exhaust manifold to match original fit and function on the listed vehicles. Part number 674-184 is built as a regular-grade replacement for service on compatible Ford, Lincoln, and Mercury applications.