Keep power steering fluid returning to the reservoir with the Sunsong power steering return line hose assembly, part number 3403627. It is a direct-fit replacement for the 1998-2003 Mercedes-Benz ML320 and the 2003-2005 Mercedes-Benz ML350, installed in the cooler-to-reservoir position on the low-pressure return side of the steering system. See the Buyer's Guide tab for engine details.
Sunsong is a vertically integrated manufacturer that researches, develops, and builds automotive fluid transfer hoses and lines. Its products are engineered to deliver exact form, fit, and function, with the stated goal of exceeding industry quality standards.
This hose may need replacing if you see power steering fluid seeping from the hose or its fittings, a reservoir that keeps running low, or a cracked or deteriorated hose. Diagnose the source of the leak before replacing parts.
Interchange: 40513 · 81076 · 352696 · 23403627 · 1634660781 · 79070 · 5674 · PSH0112R
This part cross-references / interchanges with the following part numbers:
Where does this return line hose assembly install?
It is cataloged for the cooler-to-reservoir position. It carries power steering fluid from the cooler back to the reservoir on the low-pressure return side.
Which vehicles does Sunsong 3403627 fit?
It is listed for the 1998-2003 Mercedes-Benz ML320 and the 2003-2005 Mercedes-Benz ML350. See the Buyer's Guide tab for engine details.
What pressure is this return hose rated for?
Sunsong rates its return hoses for a maximum working pressure of 250 psi. They are intended for low-pressure, high-temperature operation.
What are signs a power steering return hose may need replacing?
Signs include fluid seeping at the hose or fittings, a reservoir that keeps running low, or a cracked or deteriorated hose. Diagnose the leak source before replacing parts.
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.
