Rein PSR0222 Power Steering Reservoir

OE-Quality Power Steering Reservoir

The Rein PSR0222 power steering reservoir is an OE-quality replacement built for Mercedes-Benz steering systems that need reliable fluid storage and stable performance. It is made from virgin plastic to help resist cracking from repeated heat cycles and maintain a durable seal over time.

Compatible with select Mercedes-Benz CLS550, ML350, ML450, R350, CL550, E550, S450, and S550 applications, this reservoir is engineered for direct fitment and consistent OE-style operation.

Key Features

• Resistant to cracking and wear from heat cycles to help prevent fluid loss
• Produced from virgin plastic with no regrind for OE-level material quality
• Direct-fit design for straightforward installation
• Manufactured to strict engineering standards for materials and tolerances
• Rein PSR0222 is built for long service life in demanding steering systems

Detailed Description

Rein Automotive designs this power steering reservoir to match the fit, form, and function expected from the original component. The virgin-plastic construction helps the reservoir hold up under engine-bay heat, while the OE-style dimensions support proper installation on the listed Mercedes-Benz models. If you are replacing a leaking, brittle, or heat-damaged reservoir, the PSR0222 provides a direct replacement path for service work on Mercedes-Benz CLS550, ML350, ML450, R350, CL550, E550, S450, and S550 vehicles.

This part cross-references Genuine 0004602583 for the same application.

Common Problems This Part Can Address

• Power steering fluid loss from a cracked reservoir
• Visible plastic deterioration from repeated heat cycling
• Reservoir seepage at the tank body or seams
• Poor fitment from worn or incorrect replacement parts
• Service issues on Mercedes-Benz steering systems using the listed OE-style reservoir

Installation Notes and Tips

Before installation, verify the reservoir matches the original unit by part number and vehicle application. Inspect connected hoses, clamps, and the power steering pump for wear or contamination, and clean the area before transferring fluid. After installation, fill with the correct power steering fluid specified for the vehicle and check for leaks with the engine running and steering cycled lock-to-lock.

Fits 2007-2011 Mercedes-Benz CLS550, N/A. Fits 2007-2011 Mercedes-Benz ML350, N/A. Fits 2010-2011 Mercedes-Benz ML450, N/A, w/Belt Driven Pump. Fits 2006-2011 Mercedes-Benz R350, N/A. Fits 2009-2010 Mercedes-Benz CL550, N/A. Fits 2007-2009 Mercedes-Benz E550, N/A. Fits 2008-2009 Mercedes-Benz S450, N/A, w/o Active Body Control. Fits 2007-2009 Mercedes-Benz S550, N/A, w/o Active Body Control. Fits 2006 Mercedes-Benz ML350, N/A, To 12/20/05, Requires Replacement Of PS Pump. Fits 2006 Mercedes-Benz ML350, N/A, From 12/20/05.

Quality Assurance

Rein manufactures this reservoir to OE-quality standards using virgin plastic and controlled material tolerances. Warranty coverage is 24 months or 24,000 miles.