Dorman 674-526 Exhaust Manifold - Rear

Durable Stainless Steel Exhaust Manifold for Buick, Oldsmobile, Pontiac

The Dorman 674-526 exhaust manifold is engineered to provide reliable exhaust flow for select Buick, Oldsmobile, and Pontiac models. Constructed from stainless steel with a natural finish, this exhaust manifold offers corrosion resistance and long-lasting performance for vehicles like the Buick Century and Pontiac Grand Am.

• Made from corrosion-resistant stainless steel material
• Natural color finish for durability and heat tolerance
• Round port shape designed for optimal exhaust flow
• Includes exhaust manifold gasket and flange for proper sealing
• Mounting hardware included for straightforward installation
• Compatible with Buick Achieva, Oldsmobile Cutlass Ciera, and Pontiac Skylark

Product Details and Specifications

The Dorman 674-526 exhaust manifold is designed with a round port shape to match the exhaust ports on compatible engines, ensuring efficient exhaust gas evacuation. Its stainless steel construction helps resist rust and heat damage, maintaining structural integrity over time. The natural finish preserves the manifold’s appearance and performance under high-temperature conditions. This exhaust manifold comes with a gasket and flange to ensure a proper seal between the manifold and the exhaust system, reducing the risk of leaks. It is intended for use on regular grade applications and does not include a heat shield.

Compatible Vehicles and Applications

This exhaust manifold is compatible with a range of Buick, Oldsmobile, and Pontiac vehicles, including:

• Buick Achieva
• Buick Century
• Oldsmobile Cutlass Calais
• Oldsmobile Cutlass Ciera
• Oldsmobile Cutlass Cruiser
• Pontiac Grand Am
• Pontiac Skylark

Common Issues Addressed by This Exhaust Manifold

• Exhaust leaks caused by cracked or warped manifolds
• Corrosion damage from rusted factory manifolds
• Reduced engine performance due to poor exhaust flow
• Excessive engine noise from damaged exhaust components
• Failed emissions tests related to exhaust system leaks

Installation Notes and Tips

When installing the Dorman 674-526 exhaust manifold, ensure all old gasket material is fully removed to prevent leaks. Use the included gasket and flange to achieve a proper seal. Tighten mounting bolts evenly to manufacturer torque specifications to avoid warping the manifold. It is recommended to inspect related exhaust components during installation for wear or damage.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit and function. The 674-526 part number undergoes quality checks to ensure durability and performance. Warranty coverage details should be confirmed with the product documentation or supplier.