Delphi TC7057 Suspension Control Arm - Rear Right Upper Rearward

OE-Style Rear Suspension Control Arm

Delphi TC7057 is a rear suspension control arm built for the rear right upper rearward position on select Audi applications. It combines an aluminum arm body with rubber bushings to support precise suspension geometry and consistent rear-end control.

Fits 2017-2022 Audi Q7, rear right upper rearward. Fits 2019-2022 Audi Q8, rear right upper rearward. Fits 2020-2022 Audi RS Q8, rear right upper rearward. Fits 2020-2022 Audi SQ7, rear right upper rearward. Fits 2020-2022 Audi SQ8, rear right upper rearward.

Key Features

• Part number: TC7057
• Rear right upper rearward suspension control arm
• Aluminum arm construction with casting/forged design
• Rubber bushings included
• Black bushing color, gray arm finish
• Length: 470.0 mm; width: 128.6 mm; height: 92.2 mm
• Distance between mounting holes: 405.5 mm
• Pre-greased: No
• Grease fitting included: No
• Mounting hardware included: No

Detailed Description

Delphi TC7057 is engineered for the rear right upper rearward suspension location and is listed for 2017-2022 Audi Q7, 2019-2022 Audi Q8, 2020-2022 Audi RS Q8, 2020-2022 Audi SQ7, and 2020-2022 Audi SQ8. The aluminum construction helps maintain the correct suspension layout while the included rubber bushings provide the isolation expected in OE-style rear suspension service. Delphi applies dimensional and material analysis to help match OE and aftermarket requirements, and the part is tested across extreme temperature and salt-spray exposure conditions to verify durability in demanding environments. This part cross-references Audi OE numbers 4M0 505 398 L and 4M0 505 398 P for the same application.

Common Repair Symptoms

• Rear suspension clunking or knocking over bumps
• Uneven rear tire wear from worn suspension geometry
• Loose or unstable rear-end feel during cornering
• Visible bushing wear, cracking, or separation
• Incorrect rear wheel alignment after control arm wear

Installation Notes

Verify the rear right upper rearward position before installation and confirm all dimensions against the removed part. Because mounting hardware is not included, reuse or source the correct fasteners as required by the vehicle service procedure. After installation, perform a rear alignment check to confirm suspension geometry and tire wear protection.

Quality Assurance

Delphi uses OE-focused engineering, dimensional analysis, and material validation to support fit and function for aftermarket steering and suspension service. The part is also subjected to temperature extremes and extended salt-spray testing to evaluate durability in harsh operating conditions.