Gates TL166 Turbocharger Oil Return Line

Turbocharger Oil Drain Line for OE Fitment

The Gates TL166 turbocharger oil drain line is built for direct oil return service in turbocharged engines. It uses stainless steel and rubber construction to handle heat and maintain a secure seal in the turbocharger system.

Compatible with select Audi and Volkswagen applications, including Audi A4, A5, Q5, A6, A3, TT Quattro, and Volkswagen Tiguan, GTI, Jetta, Passat, and Golf models. Gates TL166 is an OE Exact turbocharger oil drain line for service work that calls for factory-style fitment.

Key Features

• Turbocharger oil drain line for oil return from the turbocharger
• Stainless steel and rubber construction for durability in high-temperature areas
• Bolt-on inlet and outlet fittings for direct replacement fitment
• OE Exact comparison rating for factory-style application matching
• Centerline length: 6.75 in. (172 mm)
• Contents: turbocharger oil drain line and 2 gaskets

Product Details

Gates Turbocharger Oil Line products are engineered for oil conveyance to and from the turbocharger, where heat and pressure place constant stress on the line. The TL166 turbocharger oil drain line is designed to maintain a secure oil path while resisting leaks in the turbo system. This part number, TL166, is a direct-fit service option for vehicles that use a bolt-on drain line layout.

This part cross-references Dorman - OE Solutions 667-581 for the same application.

Common Repair Uses

• Oil seepage at the turbocharger drain connection
• Cracked or heat-damaged turbo oil return line
• Loose or leaking bolt-on drain line fittings
• Turbocharger oil drainage issues after service
• Replacement for worn OE-style oil return plumbing

Installation Notes

Verify the vehicle’s engine and turbocharger oil line layout before installation. Clean the mating surfaces thoroughly and inspect the sealing points for damage before bolting the line in place. Confirm that the line routing matches the original part and that the gaskets seat evenly to help prevent leaks.

Fits 2009-2014 Audi A4, N/A; Fits 2016 Audi A4, N/A; Fits 2009-2014 Audi A4 Quattro, N/A; Fits 2016 Audi A4 Quattro, N/A; Fits 2010-2016 Audi A5, N/A; Fits 2010-2016 Audi A5 Quattro, N/A; Fits 2011-2016 Audi Q5, N/A; Fits 2012-2015 Audi A6, N/A; Fits 2013-2015 Audi A6 Quattro, N/A; Fits 2008-2013 Audi A3, N/A; Fits 2009-2013 Audi A3 Quattro, N/A; Fits 2011-2013 Audi TT Quattro, N/A; Fits 2010 Audi S3, N/A; Fits 2013-2016 Audi allroad, N/A; Fits 2013-2016 Audi A4 allroad, N/A; Fits 2018 Audi Q3, N/A; Fits 2018 Audi Q3 Quattro, N/A; Fits 2009-2017 Volkswagen Tiguan, N/A; Fits 2017 Volkswagen Tiguan Limited, N/A; Fits 2014-2017 Volkswagen CC, N/A; Fits 2009 Volkswagen CC, N/A; Fits 2012-2016 Volkswagen Eos, N/A; Fits 2009 Volkswagen Eos, N/A; Fits 2012-2013 Volkswagen Beetle, N/A; Fits 2013 Volkswagen Golf, N/A; Fits 2007 Volkswagen Golf, N/A; Fits 2012-2013 Volkswagen Golf R, N/A; Fits 2012-2013 Volkswagen Jetta, N/A; Fits 2008-2010 Volkswagen Jetta, N/A; Fits 2009-2012 Volkswagen GTI, N/A; Fits 2007-2010 Volkswagen Golf City, N/A; Fits 2009-2010 Volkswagen Passat, N/A; Fits 2009 Volkswagen Passat CC, N/A; Fits 2008-2009 Volkswagen Jetta City, N/A, Eng. Designation CBFA; Fits 2008-2009 Volkswagen Jetta City, N/A, Eng. Designation CCTA

Quality Assurance

Gates manufactures turbocharger oil supply and drain lines for oil transfer in demanding turbo systems. TL166 is built as an OE Exact replacement to match the original application requirements for service on select Audi and Volkswagen vehicles.