Dorman 674-870 Exhaust Manifold

Exhaust Manifold for Select GM and Saturn Models

This Dorman exhaust manifold is engineered to match the fit and function of the original part on specified vehicles. Built from cast iron with an oval port shape, it includes the gasket, flange, heat shield, and downpipe hardware needed for a complete exhaust repair.

Compatible with select Chevrolet, Saturn, Pontiac, and Oldsmobile applications, this manifold is a direct-fit replacement for common exhaust leaks and cracked manifold concerns. Part number 674-870 is built for vehicles that require a regular-grade replacement with OE-style fitment.

Key Features

• Cast iron construction for durable exhaust service
• Natural finish with oval port shape
• Heat shield included
• Gasket or seal included for installation
• Mounting hardware included
• Package contents include exhaust manifold, manifold gasket, flange, studs, and nuts
• Fits select 2000-2007 Chevrolet, Saturn, Pontiac, and Oldsmobile models

Detailed Description

Dorman 674-870 is a replacement exhaust manifold designed for vehicles such as the Chevrolet Cobalt, Chevrolet HHR, Saturn Ion, and Saturn Vue, along with additional listed applications. It is precision-engineered to match the original manifold’s fit and function, helping restore proper exhaust routing and sealing at the cylinder head. The cast iron body supports long-term exhaust heat exposure, while the included gasket, flange, heat shield, and downpipe hardware help complete the repair.

This part cross-references ATP 101469 and 90537679 for the same application. For buyers searching for a 2006 Chevrolet Cobalt exhaust manifold, a 2002-2006 Saturn Vue exhaust manifold, or a 2003-2005 Saturn Ion exhaust manifold, part number 674-870 provides a direct replacement option.

What It Helps Fix

• Exhaust leaks at the manifold-to-cylinder-head sealing surface
• Cracked or warped original manifold housings
• Broken or missing manifold mounting hardware
• Noise from escaping exhaust gases near the engine
• Failed flange or gasket sealing at the downpipe connection

Installation Notes and Tips

Verify engine and emissions configuration before ordering, since fitment excludes California emissions on some Saturn applications and excludes SULEV on the 2006 Chevrolet Cobalt. Confirm the port shape, mounting points, and included hardware match the vehicle before installation. Clean the mating surfaces thoroughly and inspect the flange area and studs during repair to help ensure a proper seal.

Quality Assurance

Dorman manufactures this exhaust manifold to match the fit and function of the original part on the listed vehicles. The design uses cast iron construction and includes the sealing and mounting components needed for a complete exhaust manifold replacement.