ATP Parts 101377 Exhaust Manifold - Left

Exhaust Manifold for Left-Side Applications

ATP Parts 101377 is a left exhaust manifold for select Chevrolet and GMC trucks and SUVs with air pump-equipped exhaust systems. It restores the path for burnt exhaust gases from the engine to the exhaust system and addresses the cracking or warping that can lead to exhaust leaks in the engine bay.

Compatible With 2001-2007 Chevrolet Silverado 2500 HD, left; 2001-2006 Chevrolet Silverado 3500, left; 2002-2006 Chevrolet Avalanche 2500, left; and other listed Chevrolet Silverado, GMC Sierra, Suburban, and Yukon XL 2500 applications. Part number 101377 is built to match original fit and function for the specified vehicles.

Key Features

• Left-side exhaust manifold for select GM truck and SUV applications
• Restores exhaust flow from the engine to the exhaust system
• Addresses leaks caused by cracked or warped manifolds
• Designed for vehicles equipped with an air pump
• OE-style replacement for direct-fit service on listed applications
• ATP Parts 101377 cross-references 674729 and 12555621 for the same application

Detailed Description

ATP Parts 101377 is an exhaust manifold replacement engineered for the left side of select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, GMC Sierra 3500, Chevrolet Avalanche 2500, Chevrolet Suburban 2500, and GMC Yukon XL 2500 models. It is intended to replace a damaged manifold that can leak hot exhaust gases into the engine compartment and create cabin odor or drivability concerns. By restoring the original exhaust routing, this manifold helps return the system to proper operation on the listed Chevrolet Silverado and GMC Sierra applications.

The manifold is specified for vehicles with an air pump and does not include a block-off plate. Part number 101377 is a direct replacement choice when servicing the left exhaust manifold on the covered 2001-2007 GM applications.

Common Problems This Part Can Address

• Exhaust leak from a cracked manifold
• Warped manifold sealing surface
• Exhaust odor entering the engine compartment or cabin
• Loss of proper exhaust routing on the left side
• Noise caused by manifold leakage

Installation Notes and Tips

Verify engine configuration, air pump equipment, and left-side fitment before installation. This part is listed for 2001-2007 Chevrolet Silverado 2500 HD, 2001-2006 Chevrolet Silverado 3500, 2002-2006 Chevrolet Avalanche 2500, 2001-2006 Chevrolet Suburban 2500, 2001-2006 GMC Sierra 2500 HD, 2001-2006 GMC Sierra 3500, and 2001-2006 GMC Yukon XL 2500, plus 2007 Classic Silverado and Sierra HD applications. Follow factory service procedures and inspect the mating surfaces and related exhaust components during replacement.

Quality Assurance

ATP Parts manufactures exhaust manifolds to match original part fit and function for the listed applications, helping restore the exhaust system after manifold failure.