Delphi TC4772 Lateral Arm - Rear Left Upper

OE-Style Rear Left Upper Lateral Arm

Delphi TC4772 is a rear left upper lateral arm built for OE-style suspension service on select Hyundai and Kia vehicles. It uses an aluminum, cast construction with rubber bushings to help restore rear suspension geometry and consistent handling response.

Compatible with 2015-2019 Hyundai Sonata and 2016-2020 Kia Optima, this Delphi lateral arm is a direct-fit replacement for the rear left upper position. Delphi applies OE-level dimensional and material analysis to support proper fitment, and the part is tested for temperature extremes and salt-spray exposure to reflect real-world underbody conditions.

Key Features

• Part number: TC4772
• Rear left upper lateral arm for suspension repair
• Aluminum, cast construction
• Rubber bushings included
• Black finish with matte sheen
• Standard replacement grade
• Non-adjustable, non-greaseable design
• End 1 and End 2 use bushings

Detailed Description

Delphi TC4772 is engineered as a suspension lateral arm for the rear left upper position, helping maintain alignment and wheel control in the rear suspension assembly. The arm measures 12.362 in. (314.00 mm) in length and features a bent shape, 0.559 in. (14.20 mm) mounting hole diameter, and 1.752 in. (44.50 mm) bushing length. Its aluminum cast construction and rubber bushing material support OE-style replacement needs for Hyundai Sonata and Kia Optima applications. This part cross-references MOOG Chassis Products RK643705 for the same application.

What It Helps Address

• Rear suspension looseness or instability
• Excessive play from worn bushings
• Alignment issues related to a worn lateral arm
• Uneven rear tire wear caused by suspension wear
• Noisy rear suspension movement over bumps

Installation Notes and Tips

Install TC4772 in the rear left upper position only. Verify vehicle year, make, model, and suspension layout before installation on a 2015-2019 Hyundai Sonata or 2016-2020 Kia Optima. Because mounting hardware is not included, reuse or source the correct hardware as required by the vehicle service procedure. A post-installation alignment is recommended after suspension component replacement.

Quality Assurance

Delphi applies OE-focused engineering and material analysis to its aftermarket steering and suspension portfolio. This part is tested across extreme temperature ranges and exposed to extended salt-spray conditions to support durability in demanding underbody environments.