Dorman 674-392 Exhaust Manifold - Right

OE-Style Exhaust Manifold Replacement

Dorman 674-392 is a direct-fit exhaust manifold for specified Jeep applications, built to match the original fit and function on the vehicle. It is made from cast iron and includes the gasket and downpipe hardware needed for a complete exhaust manifold repair on the right side.

Compatible With 1987-1991 Jeep Grand Wagoneer, right; 1987-1988 Jeep J10, right; and 1987-1988 Jeep J20, right. If you are searching for a right exhaust manifold for Jeep Grand Wagoneer, J10, or J20 models, part number 674-392 provides the correct application coverage.

Key Features

• Cast iron construction for exhaust manifold durability
• Natural finish
• Irregular port shape to match the original manifold design
• Heat shield included
• Gasket or seal included for repair completion
• Mounting hardware included
• Package contents: exhaust manifold, manifold gasket, flange gasket, nuts, and washers

Detailed Description

Dorman 674-392 is engineered as an OE-style replacement exhaust manifold for the right side of select Jeep trucks and wagons. The cast iron construction supports long-term service in high-heat exhaust conditions, while the included gaskets and downpipe hardware help restore a proper seal at the manifold-to-cylinder-head and manifold-to-pipe connections. This part cross-references ATP 101145 and J8121274 for the same application. For buyers comparing Jeep Grand Wagoneer exhaust manifold replacement options, 674-392 is built around the original fitment requirements of the vehicle.

Common Repair Issues

• Exhaust leaks at the manifold flange
• Cracked or warped original manifold
• Broken or corroded manifold mounting points
• Noise from a leaking right-side exhaust manifold
• Failed gasket sealing at the manifold or downpipe connection

Installation Notes and Tips

Install on the right side only for the listed Jeep applications. Inspect the cylinder head surface, fasteners, and exhaust flange before installation, and replace any damaged mating components to help achieve a proper seal. Verify vehicle year, model, and position before ordering, especially when sourcing a Jeep J10 exhaust manifold or Jeep J20 exhaust manifold replacement.

Quality Assurance

This Dorman exhaust manifold is manufactured to match the fit and function of the original part on specified vehicles. It is designed for direct replacement use on 1987-1991 Jeep Grand Wagoneer and 1987-1988 Jeep J10 and J20 right-side applications.