Dorman 674-470 Exhaust Manifold - Left

Dorman 674-470 Exhaust Manifold for Left Side Repair

This Dorman exhaust manifold is precision-engineered for specified Chevrolet and GMC trucks and SUVs, with fit and function matched to the original manifold. Built from cast iron with an oval port shape, it is a direct repair solution for the left side exhaust on applications such as Chevrolet C1500, GMC K1500, and Chevrolet Tahoe.

Key Features

• Cast iron construction for durable exhaust service
• Natural finish
• Oval port shape
• Mounting hardware included
• Gasket or seal included for a complete repair
• Package contents include exhaust manifold, manifold gasket, flange gasket, studs, nuts, and springs
• Interchange reference: 12557359

Detailed Description

Dorman 674-470 is an exhaust manifold replacement for the left side of select Chevrolet and GMC full-size trucks and SUVs from 1988-2000. It is engineered to match the original manifold’s fit and function, helping restore proper exhaust routing on vehicles including Chevrolet C2500, GMC C3500, Chevrolet Blazer, GMC Jimmy, and GMC Yukon. The cast iron design supports long-term exhaust service, while the included gaskets and downpipe hardware help complete the repair with the correct sealing components. This part number, 674-470, is a direct-fit replacement for specified OE applications and cross-references 12557359 for the same application.

What This Part Helps Repair

• Exhaust leaks at the manifold-to-cylinder-head sealing surface
• Cracked or warped original manifold housings
• Broken or missing manifold mounting hardware
• Noise from leaking exhaust on the left side of the engine
• Failed flange sealing at the downpipe connection

Installation Notes and Tips

Install on the left side only for the listed applications. Verify engine and chassis fitment before installation, especially on Chevrolet and GMC trucks and SUVs with multiple exhaust configurations. Clean the mating surfaces thoroughly, replace damaged fasteners as needed, and follow factory torque specifications during assembly. The included gasket and hardware support a more complete exhaust manifold repair. Confirm the vehicle application by year, make, model, and position before ordering Dorman 674-470.

Quality Assurance

This manifold is manufactured to match original fit and function on specified vehicles and is built from cast iron for regular-duty exhaust service. It includes the sealing components and downpipe hardware needed for the repair, supporting a proper OE-style installation on compatible Chevrolet and GMC applications.