Delphi TC8503 Suspension Control Arm - Rear Right Upper

Delphi TC8503 Rear Right Upper Control Arm

Delphi TC8503 is a steel suspension control arm built for the rear right upper position on select Hyundai and Kia vehicles. It uses a stamped steel construction with an e-coated finish and included rubber bushings to support OE-style suspension geometry and consistent fitment.

Key Features

• Part number: TC8503
• Rear right upper suspension control arm
• Stamped steel construction with steel control arm material
• E-coated black finish for added surface protection
• Rubber bushings included; black bushing color
• Bolt-on mounting type
• Standard replacement grade
• Not adjustable and not greaseable

Fitment

• Fits 2021-2024 Kia Seltos, rear right upper.
• Fits 2018-2023 Hyundai Kona, rear right upper.

Detailed Description

Delphi TC8503 is engineered as a direct replacement suspension control arm for the rear right upper location. It measures 363.00 mm in maximum length, with a 307.50 mm distance between mounting holes and a 307.50 mm distance between bushings, helping maintain the intended suspension alignment on the vehicle. The stamped steel body, bend shape, and e-coated surface support durable service in demanding undercar conditions. This part cross-references Hyundai/Kia OE-style applications such as 55121J9500 and X18LA0399 for the same application.

For drivers searching for a rear right upper control arm for Kia Seltos or Hyundai Kona, Delphi TC8503 provides a straightforward replacement option that matches the original mounting style and includes bushings for installation. It is a practical choice when restoring rear suspension control and replacing worn components that can affect ride quality and alignment.

Common Issues This Part May Address

• Rear suspension looseness or clunking from worn control arm bushings
• Uneven tire wear caused by suspension geometry changes
• Rear alignment problems after component wear or damage
• Excessive play in the rear right upper suspension link
• Noise or vibration from deteriorated rubber bushings

Installation Notes and Tips

Install TC8503 in the rear right upper position only. Because this is a bolt-on, standard replacement control arm, verify all mounting points, bushing orientation, and fastener condition before final tightening. An alignment check is recommended after suspension work to confirm rear geometry is within specification. Confirm vehicle application by year, make, model, and position before ordering.

Quality Assurance

Delphi applies OE-focused dimensional and material analysis to its steering and suspension parts. This control arm is tested for temperature extremes below -40 degrees C and above 120 degrees C, and it is exposed to 720 hours of salt spray to evaluate corrosion resistance and durability.