Delphi TC7053 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

OE-Style Front Left Upper Control Arm

Delphi TC7053 is a front left upper suspension control arm and ball joint assembly built for select Mercedes-Benz S-Class and Maybach applications. It combines a steel casting/forged construction with a pre-greased, press-in ball joint for a direct-fit replacement focused on OE-style geometry and steering response.

Fits 2014-2017 Mercedes-Benz S550, front left upper; fits 2015-2017 Mercedes-Benz S550e, front left upper; fits 2015-2017 Mercedes-Benz S600, front left upper; fits 2016-2017 Mercedes-Benz Maybach S600, front left upper; fits 2017 Mercedes-Benz Maybach S550, front left upper; fits 2018 Mercedes-Benz S450, front left upper; fits 2018 Mercedes-Benz S560, front left upper; fits 2018 Mercedes-Benz Maybach S560, front left upper; fits 2018 Mercedes-Benz Maybach S650, front left upper.

• Part number: TC7053
• Position: front left upper
• Control arm material: steel with casting/forged construction
• Ball joint included with threaded stud and press-in mounting type
• Pre-greased design with dust boot included
• Bushings included, with rubber bushing material and black finish
• Adjustable assembly with mounting hardware included
• Locking nut included
• Greaseable: no
• Steering type: power

Detailed OE Replacement Design

Delphi TC7053 is engineered for the front left upper suspension position on Mercedes-Benz S550, S550e, S600, and Maybach S-Class models listed above. Delphi applies OE-focused dimensional and material analysis to help maintain proper fit and suspension alignment, while the painted steel arm, chloroprene rubber dust boot, and premium-grade components are built for demanding road conditions. The assembly is tested across extreme temperature ranges and extended salt-spray exposure to reflect the durability expectations of OE-style steering and suspension parts. This part cross-references MOOG Chassis Products RK623921 for the same application.

Common Suspension Issues This Part Addresses

• Front-end clunking or knocking from a worn upper control arm or ball joint
• Excessive play in the front left upper suspension joint
• Uneven tire wear caused by worn bushings or ball joint movement
• Steering wander or reduced straight-line stability
• Alignment problems after suspension wear on Mercedes-Benz S-Class and Maybach models

Installation Notes and Tips

Install TC7053 on the front left upper position only. Because this assembly is adjustable, a professional wheel alignment should be performed after installation. Verify that the mounting hole diameter, bushing dimensions, and ball joint stud type match the vehicle before installation. The pre-greased, non-greaseable design is intended for sealed service, so do not add grease to the joint.

Quality Assurance

Delphi backs this suspension control arm and ball joint assembly with OE-focused engineering and validation. The part is subjected to temperature cycling below -40 degrees C and above 120 degrees C, along with 720 hours of salt-spray exposure, to help confirm durability for real-world use on Mercedes-Benz Maybach S560, S650, and related S-Class applications.