Delphi TBR4556 Rack and Pinion Bellows

OE-Style Steering Bellows

Delphi TBR4556 is a rack and pinion bellows built for Mercedes-Benz steering systems that need a precise OE-style fit. It is engineered for the Mercedes-Benz A220, CLA250, and GLA250 applications listed below, with material and dimensional analysis focused on matching the original part.

• OE-focused steering bellows for rack and pinion protection
• Built using Delphi OE expertise for aftermarket steering service
• Tested for extreme temperature exposure from below -40 C to over 120 C
• Exposed to 720 hours of salt spray for corrosion resistance validation
• Designed to match OE dimensions and materials for proper compatibility

Fitment Details

Compatible with select Mercedes-Benz models. Fits 2019-2022 Mercedes-Benz A220, N/A. Fits 2020-2022 Mercedes-Benz CLA250, N/A. Fits 2020-2022 Mercedes-Benz CLA35 AMG, N/A. Fits 2020-2022 Mercedes-Benz CLA45 AMG, N/A. Fits 2021-2022 Mercedes-Benz GLA250, N/A. Fits 2021-2022 Mercedes-Benz GLA35 AMG, N/A. Fits 2020-2021 Mercedes-Benz A35 AMG, N/A. Fits 2021 Mercedes-Benz GLA45 AMG, N/A. Fits 2020-2021 Mercedes-Benz GLB250, N/A. Fits 2021 Mercedes-Benz GLB35 AMG, N/A.

Common Replacement Uses

• Replacing a cracked or torn steering bellows
• Restoring protection for the rack and pinion assembly
• Addressing contamination from road debris and moisture
• Correcting fitment issues caused by worn OE-style boots

Installation Notes

Verify the part number TBR4556 against the vehicle application before installation. Confirm the steering system configuration and inspect adjacent steering components for wear before reassembly. This part cross-references Monroe Shocks & Struts (e.g., 177463000064) for the same application.

Quality Assurance

Delphi applies OE engineering methods to its aftermarket steering portfolio and validates parts through temperature and corrosion testing. TBR4556 is supported by dimensional and material analysis intended to align the aftermarket part with OE requirements.