Dorman 667-586 Turbocharger Coolant Line - Return

Dorman Turbocharger Coolant Line 667-586

Dorman 667-586 is a turbocharger coolant line built to match the fit and function of the original line on specified vehicles. It uses stainless steel and rubber construction in a molded assembly for dependable coolant routing in turbocharged applications.

Compatible with 2005-2009 Audi A4 and 2005-2009 Audi A4 Quattro in the return position, this turbo coolant line is a direct-fit replacement for service work on the cooling circuit. The Dorman 667-586 helps restore proper coolant flow where the original line has worn, cracked, or corroded.

• Turbocharger coolant line for the return circuit
• Stainless steel and rubber construction
• Molded assembly for OE-style routing
• Female inlet and outlet fittings
• Non-threaded design
• Metallic gray finish
• Package contents: 1 turbocharger coolant line

Vehicle Fitment

• Fits 2005-2009 Audi A4, Return
• Fits 2005-2009 Audi A4 Quattro, Return

Detailed Product Overview

This turbocharger coolant line is engineered as an OEM-grade replacement for the original Audi coolant line used in turbocharged return applications. The molded shape supports proper line routing, while the 0.40 in threaded fitting diameter references the original connection size for the specified vehicles. Dorman 667-586 also cross-references Rein CHT0703 for the same application.

Common Problems This Part Can Address

• Coolant leaks from a damaged turbocharger line
• Cracked or heat-aged rubber sections
• Corrosion in the original coolant line assembly
• Poor coolant circulation through the turbo return line
• Fitment issues caused by a worn OE line

Installation Notes and Tips

Verify the vehicle year, model, and return-line application before installation. Inspect adjoining coolant connections, seals, and surrounding turbocharger components for wear before reassembly. Confirm the line is routed exactly like the original part to maintain proper clearance and coolant flow.

Quality Assurance

Dorman designs this coolant line to match original fit and function using quality materials for reliable performance and durability. It is built to OEM-grade standards for the specified Audi A4 and Audi A4 Quattro applications.