Sunsong Power Steering Return Line Hose Assembly P/N:3403738
Keep power steering fluid moving from the steering gear back to the cooler with the Sunsong power steering return line hose assembly, part number 3404357. It is a direct-fit replacement for the 2005-2011 Audi A6 Quattro, 2006-2011 Audi A6, and 2007-2011 Audi S6, and it serves the gear-to-cooler section of the return circuit. See the Buyer's Guide tab for engine-level details.
Sunsong is a vertically integrated manufacturer that researches, develops, and builds automotive fluid transfer hoses and lines. The company designs its products around what installers need and aims to exceed industry quality standards. Its lines are built to deliver exact form, fit, and function.
Signs this line may need replacing include power steering fluid seeping or dripping from the hose or its fittings, a fluid level that keeps dropping, or a hose that looks damp, cracked, or swollen. Diagnose the source of the leak first. If the return line is the cause, this assembly replaces it.
Interchange: 2647-715228
2647715228 · 4F1422891A · 4F1422891L · 4F1422891M · 40469 · 81032 · 352647 · 13404357 · 77339 · 5630
This part cross-references / interchanges with the following part numbers:
What does a power steering return line hose assembly do?
It carries power steering fluid back through the low-pressure return circuit. This Sunsong assembly (3404357) serves the gear-to-cooler section on the listed Audi applications.
Which vehicles does Sunsong 3404357 fit?
It fits the 2005-2011 Audi A6 Quattro, 2006-2011 Audi A6, and 2007-2011 Audi S6. See the Buyer's Guide tab for engine-level details.
What pressure is this return hose rated for?
Sunsong rates its return hoses for a maximum working pressure of 250 psi. They are suited to low-pressure, high-temperature operation.
What are signs the return line may need replacing?
Signs include power steering fluid leaking from the hose or fittings, a fluid level that keeps dropping, or a damp, cracked, or swollen hose. Confirm the source of the leak before replacing the line.
Is the hose tested before it ships?
Yes. Sunsong puts every return hose through a high-pressure quality assurance test before it leaves the factory.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.