Dorman 674-746 Exhaust Manifold - Left

OE-Style Exhaust Manifold for Ford Super Duty

This Dorman exhaust manifold is engineered to match the fit and function of the original part on specified Ford trucks and SUVs. Built from cast iron with a natural finish, it is a direct repair option for the left side of compatible Ford Excursion, Ford F-250 Super Duty, and Ford F-350 Super Duty applications.

Part number 674-746 includes the gasket and downpipe hardware needed for a complete exhaust manifold repair. It is a practical choice when replacing a cracked, warped, or leaking manifold on 1999-2003 Ford F-250 Super Duty and F-350 Super Duty models, as well as 2000-2003 Ford Excursion left-side applications.

Key Features

• Cast iron construction for exhaust heat durability
• Natural finish
• Round port shape
• Mounting hardware included
• Gasket or seal included
• Package contents: exhaust manifold, manifold gasket, bolts, and nuts
• Left-side fitment for specified Ford applications

Detailed Description

Dorman 674-746 is a replacement exhaust manifold designed for direct fitment on the left side of select Ford heavy-duty trucks and SUVs. It is manufactured to align with the original manifold’s fit and function, helping restore proper exhaust routing and sealing on the Ford Excursion, Ford F-250 Super Duty, and Ford F-350 Super Duty. The cast iron body supports long-term service in high-temperature exhaust environments, while the included gasket and downpipe hardware support a complete repair.

This part cross-references ATP 101402 for the same application.

What This Part Helps Address

• Exhaust leaks at the manifold-to-cylinder head sealing surface
• Cracked or warped manifold housings
• Broken or missing manifold mounting hardware
• Noise from escaping exhaust on the left side of the engine
• Failed sealing components during manifold replacement

Installation Notes and Tips

Fits 2000-2003 Ford Excursion, left. Fits 1999-2003 Ford F-250 Super Duty, left. Fits 1999-2003 Ford F-350 Super Duty, left. Verify engine-side condition, flange alignment, and fastener threads before installation. Clean the mating surfaces thoroughly and inspect the downpipe connection for wear or distortion before reassembly.

Quality Assurance

Dorman manufactures this exhaust manifold to match original equipment fit and function for the listed Ford applications. Part number 674-746 is built as a regular-grade replacement for service repair use.