Delphi TBR4304 Rack and Pinion Bellows

Delphi Rack and Pinion Bellows TBR4304

Delphi TBR4304 is a rack and pinion bellows for select Mercedes-Benz steering applications. It is built using Delphi OE-focused dimensional and material analysis to support proper fit and reliable steering system protection.

Key Features

• Rack and pinion bellows for steering gear protection
• OE-informed design for dimensional compatibility
• Engineered to handle extreme temperature exposure from below -40 C to over 120 C
• Tested for corrosion resistance through 720 hours of salt spray exposure
• Direct replacement part number TBR4304 for select Mercedes-Benz models

Application Details

Compatible with 2007-2014 Mercedes-Benz CL600, 2008-2014 Mercedes-Benz CL63 AMG, 2008-2014 Mercedes-Benz CL65 AMG, 2012-2013 Mercedes-Benz S350, 2011-2013 Mercedes-Benz S400, 2007-2013 Mercedes-Benz S550, 2008-2013 Mercedes-Benz S63 AMG, and 2007-2008 Mercedes-Benz CL550. This part cross-references Beck/Arnley 103-3170 for the same application.

What This Part Helps Address

• Damaged or cracked steering rack bellows
• Contamination entering the steering rack area
• Loss of protection for inner steering components
• Wear caused by heat, cold, and road-salt exposure

Installation Notes

Verify steering rack application and vehicle year before installation. Inspect the surrounding steering components for wear, leaks, or damage before replacing the bellows. Confirm the original part number and vehicle configuration against the listed Mercedes-Benz CL600, CL63 AMG, CL65 AMG, S350, S400, S550, S63 AMG, and CL550 applications.

Quality Assurance

Delphi applies OE steering expertise to its aftermarket portfolio and validates parts through temperature and corrosion testing to support consistent performance in service.