Dorman 674-176 Exhaust Manifold - Left

Dorman 674-176 Exhaust Manifold for Dodge Trucks

Dorman 674-176 is a cast iron exhaust manifold engineered to match the fit and function of the original part on specified vehicles. It is built for the left side and includes the gaskets and downpipe hardware needed for a complete exhaust manifold repair on select Dodge D100, D150, D200, D300, Ramcharger, W100, W150, W200, and W300 applications.

Key Features

• Cast iron construction for durable exhaust service
• Natural finish with square port shape
• Left-side exhaust manifold for specified Dodge trucks and Ramcharger models
• Includes gasket and seal components for the repair
• Mounting hardware included
• Direct replacement design for OE fit and function

Detailed Description

This Dorman exhaust manifold, part number 674-176, is precision-engineered for select 1974-1978 Dodge truck and Ramcharger applications. It is designed for the left side and is a direct-fit replacement for vehicles such as the Dodge D100, D150, D200, D300, Ramcharger, W100, W150, W200, and W300. The cast iron construction supports long-term exhaust durability, while the included gasket and flange hardware help complete the repair with the correct sealing components.

This part cross-references 101003 and 651166 for the same application.

What It Helps Fix

• Exhaust leaks at the manifold-to-cylinder head sealing surface
• Cracked or warped original manifold housings
• Noise from a leaking left-side exhaust manifold
• Failed manifold gasket or flange sealing issues
• Restoration of proper exhaust routing on classic Dodge trucks

Installation Notes and Tips

• Fits 1975-1978 Dodge D100, left, wo/Heat Tube
• Fits 1977-1978 Dodge D150, left, wo/Heat Tube
• Fits 1975-1978 Dodge D200, left, wo/Heat Tube
• Fits 1975-1978 Dodge D300, left, wo/Heat Tube
• Fits 1974-1978 Dodge Ramcharger, left, wo/Heat Tube
• Fits 1977-1978 Dodge W150, left, wo/Heat Tube
• Fits 1975-1978 Dodge W200, left, wo/Heat Tube
• Fits 1975-1978 Dodge W300, left, wo/Heat Tube
• Fits 1975-1977 Dodge W100, left, wo/Heat Tube

Verify engine and exhaust configuration before installation, especially the left-side layout and the note for vehicles without a heat tube. Clean the mating surfaces thoroughly and inspect the cylinder head flange area for damage before bolting the manifold in place.

Quality Assurance

Dorman manufactures this manifold as a regular-grade replacement part with OE-style fit and function for specified Dodge applications. The included gasket and downpipe hardware support a complete repair using the correct sealing and mounting components.