Bosch KS01000673 Power Steering Pump

Bosch Remanufactured Power Steering Pump

Bosch KS01000673 is a remanufactured mechanical power steering pump for select Mercedes-Benz SUVs and crossovers. It is built for direct replacement service on vehicles that need restored hydraulic steering assist, including Mercedes-Benz R350, GL350, ML350, GL320, ML320, and R320 applications.

The Bosch Power Steering Pump (Remanufactured) line focuses on OE-style replacement coverage for hydraulic steering systems. This remanufactured unit is cataloged under Bosch part number KS01000673 and previously appeared as KS01000663.

Key Features

• Remanufactured Bosch steering pump for hydraulic power steering systems
• Mechanical steering pump construction
• Direct-fit coverage for select Mercedes-Benz R350, GL350, ML350, GL320, ML320, and R320 models
• Cross-reference part number: 0064663101
• Previously cataloged as Bosch KS01000663

Fitment Details

• Fits 2010-2013 Mercedes-Benz R350, N/A
• Fits 2010-2012 Mercedes-Benz GL350, N/A
• Fits 2010-2011 Mercedes-Benz ML350, N/A
• Fits 2009 Mercedes-Benz GL320, N/A
• Fits 2009 Mercedes-Benz ML320, N/A
• Fits 2009 Mercedes-Benz R320, N/A
• Fits 2008 Mercedes-Benz GL320, N/A; from chassis # A 390565; from 03/2008

What This Pump Helps Address

• Heavy or inconsistent steering effort
• Whining or groaning noise from the hydraulic steering system
• Low hydraulic pressure affecting steering response
• Leak-related steering assist loss at the pump
• Wear-related pump performance decline on Mercedes-Benz steering systems

Installation Notes and Tips

Verify the vehicle’s year, model, and chassis break before ordering, especially for 2008 GL320 applications with the listed chassis and production-date note. Inspect the belt drive, hoses, fluid condition, and reservoir for contamination before installing the replacement pump. After installation, bleed the power steering system according to the vehicle service procedure to remove trapped air and restore smooth assist.

Quality Assurance

Bosch remanufactured steering components are processed to restore functional performance for hydraulic steering service. This part is identified as a remanufactured unit and is intended for direct replacement use on the listed Mercedes-Benz applications.