Dorman 674-159 Exhaust Manifold - Left

Durable Cast Iron Exhaust Manifold for Chevrolet and GMC Vehicles

The Dorman 674-159 exhaust manifold is engineered to provide reliable exhaust flow for a range of Chevrolet and GMC models. Constructed from cast iron with a natural finish, this exhaust manifold offers durability and consistent performance for your vehicle's exhaust system.

• Made from durable cast iron material
• Natural color finish for corrosion resistance
• Square port shape for optimal exhaust flow
• Includes mounting hardware and gasket for easy installation
• Compatible with multiple Chevrolet and GMC models

Product Details and Specifications

This Dorman exhaust manifold (part number 674-159) is designed with a square port shape to ensure efficient exhaust gas evacuation. The cast iron construction provides strength and heat resistance, suitable for regular grade applications. The package includes the exhaust manifold, one manifold gasket and flange, six studs, and three nuts, allowing for a complete replacement installation. While it does not include a heat shield, the included gasket and mounting hardware simplify the installation process.

Compatible Chevrolet and GMC Models

This exhaust manifold is compatible with a variety of Chevrolet and GMC vehicles, including but not limited to Bel Air, Blazer, C10, C10 Suburban, C20, C20 Suburban, C30, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, Caprice, G20, G30, Impala, Jimmy, K5 Blazer, K10, K10 Suburban, K20, K20 Suburban, K30, K1500, K3500, P30, R20, R20 Suburban, R30, R2500, R2500 Suburban, R3500, V20 Suburban, V30, V2500 Suburban, and V3500 models. This ensures a precise fit for many classic and heavy-duty Chevrolet and GMC trucks and SUVs.

Common Applications and Problem Solving

• Replacement for cracked or damaged exhaust manifolds
• Restores proper exhaust flow and engine performance
• Eliminates exhaust leaks causing noise or fumes
• Prevents exhaust manifold gasket failures
• Supports emissions compliance by maintaining exhaust integrity

Installation Notes and Tips

Installation of the Dorman 674-159 exhaust manifold includes all necessary mounting hardware and gasket, streamlining the replacement process. It is recommended to inspect the exhaust ports and clean mounting surfaces before installation to ensure a proper seal. Torque all studs and nuts to manufacturer specifications to avoid leaks. Since this manifold does not include a heat shield, verify if your vehicle requires one and install separately if needed.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit and function. The 674-159 part is backed by Dorman's quality assurance processes to ensure durability and performance. Please refer to Dorman's official warranty policy for specific coverage details.