Keep power steering fluid moving quietly back to the pump with the Sunsong Power Steering Reservoir Hose 3403753. This return-side line routes fluid along the reservoir-to-pump and pump-to-pipe path, and it drops in as a direct-fit replacement for the 2002-2005 Audi A4, 2002-2006 Audi A4 Quattro, 2002-2005 Audi A6, and 2002-2005 Audi A6 Quattro — see the Buyer's Guide tab for the full engine-level fitment.
- Low-pressure return design: Rated for a max working pressure of 250 psi and suited to low-pressure, high-temperature operation on the steering return circuit.
- Corrosion-resistant tubing: Tubing is made from high-grade steel and electroplated with a zinc coating for corrosion and rust resistance against high humidity, road salt, water, and grime.
- Restores worn hardware: Includes brackets, grommets, heat shields, bushings, and protective sleeves as required, so wearable parts are returned to original condition.
Sunsong is a vertically integrated manufacturer of automotive fluid-transfer hoses and lines, engineered to deliver form, fit, and function on the listed applications. If a cracked, leaking, or corroded original return hose is the cause of low fluid or seepage, this hose replaces it.
Interchange: 8E0422887D · 40578 · 81141 · 23403753 · 79072 · 5739 · PSH0304
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this hose do?
It carries low-pressure power steering fluid on the return path, routing fluid along the reservoir-to-pump and pump-to-pipe connections.
Will it fit my vehicle?
It's a direct-fit replacement for the 2002-2005 Audi A4, 2002-2006 Audi A4 Quattro, 2002-2005 Audi A6, and 2002-2005 Audi A6 Quattro. Check the Buyer's Guide tab for engine-level details.
What is the hose made of?
The tubing is high-grade steel electroplated with a zinc coating for corrosion and rust resistance against humidity, road salt, water, and grime.
What is its pressure rating?
It has a max working pressure of 250 psi and is suited to low-pressure, high-temperature operation on the steering return circuit.
Does it include mounting hardware?
It includes brackets, grommets, heat shields, bushings, and protective sleeves as required to restore wearable parts to original condition.
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