Dorman 674-173 Exhaust Manifold

OE-Style Exhaust Manifold for Ford V8 Applications

Dorman 674-173 is a cast iron exhaust manifold engineered to match the fit and function of the original part on specified Ford vehicles. It is built for direct replacement service and includes the gaskets and downpipe hardware needed for a complete exhaust repair.

Compatible With Ford Bronco, Ford Econoline, Ford F-100, Ford F-150, Ford F-250, Ford F-350, and Ford LTD applications across the listed model years. This Dorman 674-173 manifold is a practical replacement when the original manifold is cracked, warped, or leaking at the flange.

Key Features

• Cast iron construction for exhaust manifold durability
• Natural finish with rectangle port shape
• Direct-fit replacement for specified Ford applications
• Includes gasket/seal for the repair
• Mounting hardware included for installation
• Package contents: exhaust manifold, 1 flange gasket, 2 studs, 2 nuts

Detailed Description

This exhaust manifold is precision-engineered to match the original manifold’s fit and function on the listed vehicles. The cast iron design supports long-term service in high-heat exhaust environments, while the OE-style configuration helps maintain proper exhaust routing and sealing. Dorman 674-173 is a solid choice for restoring exhaust integrity on classic Ford trucks, vans, and SUVs, including Ford Bronco and Ford Econoline platforms.

This part cross-references 101019 and D1AZ9426A for the same application.

Common Repair Issues

• Exhaust leaks at the manifold or flange
• Cracked or warped original manifold surfaces
• Broken or missing manifold-to-downpipe fasteners
• Noise from escaping exhaust gases near the engine
• Failed sealing at the cylinder head or outlet connection

Installation Notes and Tips

Verify engine and emissions configuration before ordering, especially for 1981-1983 Ford E-100 Econoline, E-150 Econoline, E-250 Econoline, E-350 Econoline, F-100, F-150, and F-250 models listed as wo/California Emissions. Inspect the cylinder head mating surface, exhaust flange, and fastener threads before installation. Replace damaged studs or nuts as needed and follow the vehicle service manual for torque sequence and heat-cycle recheck procedures.

Quality Assurance

Dorman manufactures this manifold as a regular-grade replacement part for specified Ford applications. The design is focused on matching original fit and function for dependable repair service.