Dorman 674-526 Exhaust Manifold - Rear

Dorman 674-526 Exhaust Manifold

This Dorman exhaust manifold is precision-engineered to match the fit and function of the original part on specified vehicles. Built from stainless steel and supplied with the necessary gaskets and downpipe hardware for a complete repair, it is a direct replacement for rear-position applications on select Buick, Oldsmobile, and Pontiac models.

• Stainless steel construction for durable exhaust service
• Natural finish with a round port shape
• Includes gasket/seal components for the repair
• Mounting hardware included
• Rear-position fitment for specified applications
• Cross-references Monroe Shocks & Struts (e.g., 101131, 24500171) for the same application

Detailed Fitment and Function

Part number 674-526 is an exhaust manifold replacement for rear-position applications on 1989-1993 Buick Century, 1989-1993 Buick Skylark, 1992-1993 Oldsmobile Achieva, 1989-1993 Oldsmobile Cutlass Ciera, 1989-1993 Oldsmobile Cutlass Cruiser, 1992-1993 Pontiac Grand Am, and 1989-1991 Oldsmobile Cutlass Calais. It is built to restore the original manifold’s fit and function while supporting a proper exhaust seal at the manifold-to-downpipe connection.

What This Part Helps Resolve

• Exhaust leaks at the manifold or flange area
• Cracked, warped, or corroded original manifold surfaces
• Noise from a failing rear exhaust manifold
• Loss of exhaust sealing at the cylinder head connection
• Repair needs on Buick Century, Buick Skylark, and related rear manifold applications

Installation Notes and Tips

Verify rear-position fitment before installation and compare the original manifold, port shape, and mounting points to the replacement part. Clean the mating surfaces thoroughly, inspect the flange area, and replace damaged fasteners or sealing surfaces as needed to support a proper exhaust seal. Part number 674-526 includes the gasket and downpipe hardware needed for the repair.

Quality Assurance

Dorman manufactures this manifold to match original fit and function on the listed vehicles. The stainless steel construction and included sealing components support a complete exhaust manifold replacement for the specified Buick, Oldsmobile, and Pontiac applications.