Delphi TC8363 Suspension Control Arm - Rear Right Lower Rearward

Mercedes-Benz Rear Right Lower Rearward Control Arm

Restore rear suspension geometry with the Delphi TC8363 suspension control arm. This steel, painted replacement arm is built for the rear right lower rearward position and includes bushings for a direct service replacement on select Mercedes-Benz CL-Class and S-Class models.

Key Features

• Delphi TC8363 suspension control arm for the rear right lower rearward position
• Steel construction with a painted black finish
• Bent, casting/forged design for standard replacement service
• Rubber bushings included; black bushing color
• Non-adjustable, non-greaseable design
• No pre-greasing, grease fitting, or mounting hardware included
• Dimensions: 19.18 in. length, 75.00 mm width, 40.50 mm height

Detailed Description

Delphi TC8363 is a rear suspension control arm engineered for the rear right lower rearward location on select Mercedes-Benz CL600, CL63 AMG, CL65 AMG, S600, S63 AMG, and S65 AMG models. It uses steel construction with a painted finish and rubber bushings to match standard replacement requirements for the suspension system. The arm’s bent shape and forged/cast construction support proper alignment and fitment in the rear suspension assembly. Delphi applies dimensional and material analysis to help ensure OE-style compatibility, and its steering and suspension components are tested across extreme temperature and salt-spray exposure conditions.

This part cross-references Monroe Shocks & Struts (e.g., RK641706) for the same application. Part number TC8363 is the reference to verify before ordering, and TC8363 is the correct Delphi identifier for this rear suspension position.

What It Helps Address

• Rear suspension looseness or instability
• Excessive play from worn control arm bushings
• Uneven rear tire wear caused by suspension geometry issues
• Noises from the rear suspension during load changes or road impacts
• Alignment problems related to a worn rear control arm

Installation Notes

• Install at the rear right lower rearward position only.
• Confirm vehicle application by year, model, and suspension position before installation.
• Mounting hardware is not included.
• Because the arm is non-adjustable, a post-installation alignment check is recommended.
• Inspect adjacent bushings and suspension links for wear before completing the repair.

Quality Assurance

Delphi uses OE-focused engineering practices for its aftermarket steering and suspension portfolio. The TC8363 is built with dimensional and material verification and is tested for durability under extreme temperature and corrosion exposure conditions to support consistent replacement quality.