Bosch KS01000039 Rack and Pinion Assembly

Bosch Hydraulic Steering Rack for Mercedes-Benz

Bosch KS01000039 is a remanufactured hydraulic steering rack and pinion assembly for select Mercedes-Benz applications. It is built for direct replacement use in vehicles equipped with hydraulic steering, including ML63 AMG models with Electronic Active Steering and the 2007 Mercedes-Benz GL320.

Key Features

• Remanufactured hydraulic steering rack and pinion assembly
• Bosch Steering Rack, Hydraulic (Remanufactured) product line
• Direct-fit replacement for select Mercedes-Benz steering systems
• Application-specific for ML63 AMG with Electronic Active Steering
• Cross-reference part numbers: 1644600225, 1644600300
• Part number KS01000039 for catalog and service verification

Product Details

The Bosch Steering Rack, Hydraulic (Remanufactured) line focuses on restoring steering gear function for vehicles that rely on hydraulic assist. This rack and pinion assembly is listed for 2007-2011 Mercedes-Benz ML63 AMG with Electronic Active Steering and 2007 Mercedes-Benz GL320. Use KS01000039 when replacing a worn steering rack in these Mercedes-Benz applications and when matching the original hydraulic steering configuration is required.

Compatible With 2007-2011 Mercedes-Benz ML63 AMG, N/A, with Electronic Active Steering. Compatible With 2007 Mercedes-Benz GL320, N/A. Bosch KS01000039 is the reference part number for these fitments.

Common Steering Issues This Part Addresses

• Excessive steering play or looseness
• Hydraulic steering fluid leakage from the rack assembly
• Uneven or inconsistent steering response
• Noise or binding during steering input
• Wear-related steering precision loss in Mercedes-Benz ML63 AMG and GL320 applications

Installation Notes and Tips

Verify the vehicle’s steering system configuration before installation, especially Electronic Active Steering on ML63 AMG applications. Confirm the part number KS01000039 against the original unit and inspect hydraulic lines, seals, and related steering components during replacement. After installation, perform a proper alignment and bleed the hydraulic system according to Mercedes-Benz service procedures.

Quality Assurance

Bosch remanufactured steering components are processed to support OE-style replacement needs for steering and chassis service. This part is identified as a remanufactured unit and is intended for direct replacement in the listed Mercedes-Benz applications.