Dorman 667-166 Turbocharger Coolant Line - Supply

Turbocharger Coolant Line for OE Fit

Dorman 667-166 is a turbocharger coolant line built to match the original line’s fit and function on specified vehicles. It uses rubber construction with molded assembly design and female ends to support a direct replacement on select Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 applications.

For buyers searching for a turbocharger coolant line for 2001-2004 Chevrolet Silverado 2500 HD or 2001-2004 GMC Sierra 3500, this Dorman 667-166 part is engineered for the supply side and follows the OE-style layout used on the factory system.

• Brand: Dorman
• Part number: 667-166
• Turbocharger coolant line for the supply position
• Rubber construction with black fittings
• Molded assembly for OE-style routing
• Female inlet and female outlet fittings
• End 1 threaded fitting diameter: 14mm x 10
• Designed for specified Chevrolet and GMC heavy-duty truck applications

Detailed Product Overview

Dorman 667-166 is a replacement turbocharger coolant line designed for vehicles that use a supply-side coolant circuit to the turbocharger. The molded rubber assembly is shaped to follow the original routing, helping maintain proper connection points and fitment on the turbo system. It is listed for 2001-2004 Chevrolet Silverado 2500 HD, 2001-2004 Chevrolet Silverado 3500, 2001-2004 GMC Sierra 2500 HD, and 2001-2004 GMC Sierra 3500 models. This part cross-references Dayco 87002 and Gates 18302 for the same application.

Common Problems This Part Can Address

• Cracked or deteriorated turbo coolant line rubber
• Coolant seepage at the turbocharger line connection
• Heat-related hardening or splitting of the original line
• Incorrect routing from a damaged molded coolant hose
• Service replacement for a worn OE turbocharger coolant line

Installation Notes and Tips

Verify the vehicle year, make, model, and supply-side routing before installation. Compare the original line’s shape, end style, and threaded connection size to confirm proper match. Inspect adjacent coolant fittings and sealing surfaces for wear or corrosion before installing the replacement line.

Quality Assurance

Dorman designs this turbocharger coolant line to match original fit and function on the listed applications. It is made from quality materials for reliable performance and durability in turbocharger cooling service.