Dorman 674-948 Exhaust Manifold - Right

Dorman 674-948 Exhaust Manifold

Dorman 674-948 is a cast iron exhaust manifold engineered to match the fit and function of the original part on specified vehicles. It includes the manifold gasket and downpipe hardware needed for a complete repair, making it a direct-fit option for right-side exhaust manifold replacement on select Buick, Chevrolet, Pontiac, and Saturn models.

Compatible With 2009-2011 Buick Lucerne, right; 2006-2011 Chevrolet Impala, right; and other listed applications, this manifold is built for OE-style fitment and dependable sealing. If you are replacing a cracked or leaking exhaust manifold on a Chevrolet Impala right side or a Buick Lucerne right side, Dorman 674-948 provides the correct configuration for the application.

Key Features

• Cast iron construction for durable exhaust service
• Natural finish with irregular port shape to match the original layout
• Includes gasket and mounting hardware for the repair
• Precision-engineered to match original fit and function
• Direct replacement for the right-side exhaust manifold on listed vehicles

Detailed Description

This exhaust manifold is designed for vehicles that require a right-side replacement and is shaped to align with the factory exhaust routing. The cast iron body helps maintain structural integrity under high exhaust temperatures, while the included gasket supports a proper seal at the cylinder head. Dorman 674-948 also cross-references 12577719 for the same application.

Fits 2009-2011 Buick Lucerne, right; 2006-2011 Chevrolet Impala, right; 2006-2008 Chevrolet Uplander, right; 2006-2007 Buick Terraza, right; 2006-2007 Chevrolet Monte Carlo, right; 2006-2007 Saturn Relay, right; and 2006 Pontiac Montana, right.

What It Helps Fix

• Exhaust leaks at the manifold-to-cylinder-head sealing surface
• Cracks or warping in the original manifold
• Noise from a leaking right-side exhaust manifold
• Failed sealing hardware during manifold replacement
• Check engine light concerns related to exhaust leakage

Installation Notes and Tips

Verify engine and right-side fitment before installation, since this part is application-specific. Inspect the mating surfaces, remove old gasket material, and confirm the downpipe alignment before tightening hardware. For best results, follow the vehicle service procedure and torque specifications for the listed Buick Lucerne, Chevrolet Impala, and other supported models.

Quality Assurance

Dorman manufactures this manifold to match original fit and function on the specified vehicles. The part is built as a regular-grade replacement and supplied with the gasket and bolts needed for the repair.