Keep power steering fluid flowing back where it belongs with the Sunsong power steering return line hose assembly, part number 3401257. This return line runs from the cooler to the reservoir and is a direct-fit replacement for the 2003-2009 Lexus GX470 and 2003-2009 Toyota 4Runner. See the "Vehicles it fits" section for engine-specific details.
Sunsong is a vertically integrated manufacturer that researches, develops and builds automotive fluid transfer hoses and lines, designing its products around what installers need.
- Rated for return-side duty: Sunsong states its return hoses exceed original equipment performance standards, with a maximum working pressure of 250 psi, and are suited to low-pressure, high-temperature operation.
- Precision fit: Return assemblies are precision engineered for an exact fit and include the additional components the assembly requires.
- Corrosion-resistant tubing: The tubing resists corrosion and rust from high humidity, road salt, water and grime.
- Pressure-tested: Each return hose goes through a high-pressure quality assurance test before it leaves the factory.
The return line carries power steering fluid at low pressure from the cooler back to the reservoir. Signs it may need replacing include fluid leaking from the hose or its connections, a wet or cracked hose, and a reservoir that keeps running low. If the return hose is the source of the leak, this assembly replaces it.
Interchange: 13401257 · PSH0517 · 4441735010 · 4441735011
This part cross-references / interchanges with the following part numbers:
3401257, 13401257, PSH0517, 4441735010, 4441735011
Frequently Asked Questions
Which vehicles does the Sunsong 3401257 fit?
It fits the 2003-2009 Lexus GX470 and the 2003-2009 Toyota 4Runner. See the "Vehicles it fits" section for engine-specific details.
Where is this return line located?
This return line runs from the power steering cooler to the reservoir. It carries fluid back to the reservoir at low pressure after the fluid passes through the cooler.
What is the pressure rating of this return hose?
Sunsong lists a maximum working pressure of 250 psi. Its return hoses are suited to low-pressure, high-temperature operation.
What are signs a power steering return hose may need replacing?
Common signs include fluid leaking from the hose or its connections, a wet or cracked hose, and a reservoir that repeatedly runs low. Diagnose the source of the leak before replacing parts.
Which part numbers does the Sunsong 3401257 interchange with?
It interchanges with 13401257, PSH0517, 4441735010 and 4441735011.
