Dorman 674-495 Exhaust Manifold - Left

Durable Cast Iron Exhaust Manifold for GM Trucks and SUVs

The Dorman 674-495 exhaust manifold is engineered to provide reliable exhaust flow for select Cadillac, Chevrolet, and GMC vehicles. Designed with a natural cast iron finish and an oval port shape, this manifold offers a solid replacement option for your vehicle's exhaust system.

• Constructed from durable cast iron material for long-lasting performance
• Natural color finish with an oval port shape for efficient exhaust flow
• Includes manifold gasket, flange gasket, and three studs for proper sealing
• Tube wall thickness of 0.43 inches ensures structural integrity
• Compatible with multiple GM models including Chevrolet Silverado 1500 and GMC Sierra 1500

Product Details and Specifications

The Dorman 674-495 exhaust manifold is designed without an oxygen sensor port, making it suitable for vehicles that do not require sensor integration at the manifold. Its regular grade type construction balances durability and cost-effectiveness. The included gaskets and studs facilitate a secure installation, helping to maintain proper exhaust sealing and prevent leaks. This exhaust manifold is a direct replacement part compatible with various GM trucks and SUVs, including the Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon XL.

Compatible Vehicles and Applications

• Cadillac Escalade and Escalade ESV
• Chevrolet Cheyenne, Silverado 1500, Silverado 1500 LD, and Silverado 2500
• GMC Sierra, Sierra 1500, Sierra 1500 Limited, and Yukon XL
• Chevrolet Tahoe and GMC Yukon

Common Issues Addressed by This Exhaust Manifold

• Exhaust leaks causing decreased engine performance
• Cracks or warping in the original manifold due to heat stress
• Corrosion or rust compromising exhaust integrity
• Failed gasket seals leading to exhaust fumes entering the cabin
• Replacement of manifolds without oxygen sensor ports

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns. Clean the mounting surface thoroughly to remove old gasket material and debris. Use the included manifold and flange gaskets along with the provided studs to secure the manifold properly. Torque all fasteners to manufacturer specifications to prevent leaks and ensure a tight seal.

Quality Assurance and Warranty

Dorman exhaust manifolds are manufactured to meet or exceed OEM standards for fit and function. The 674-495 part number undergoes quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.