Delphi TC4773 Lateral Arm - Rear Right Upper

OE-Style Rear Right Upper Lateral Arm

Delphi TC4773 is a rear right upper lateral arm built for OE-style suspension service on select Hyundai Sonata and Kia Optima models. It uses an aluminum, cast construction with rubber bushings to support rear suspension alignment and consistent handling response.

Delphi applies OE-level dimensional and material analysis to help match factory fit and function. This lateral arm is a standard replacement for rear suspension repair on 2015-2019 Hyundai Sonata and 2016-2020 Kia Optima applications.

Key Features

• Part number: TC4773
• Rear right upper position
• Aluminum construction with cast body
• Black finish with matte sheen
• Rubber bushings included
• Non-adjustable, greaseable-free design
• Standard replacement grade
• End 1 and End 2 use bushings

Fitment Details

• Fits 2016-2020 Kia Optima, rear right upper.
• Fits 2015-2019 Hyundai Sonata, rear right upper.

This part cross-references MOOG Chassis Products RK643706 for the same application.

What This Part Helps Address

• Rear suspension looseness from worn arm bushings
• Uneven rear wheel alignment caused by suspension wear
• Clunking or shifting from deteriorated lateral arm components
• Handling instability at the rear suspension corner
• Service replacement for damaged OE-style rear upper arm assemblies

Installation Notes

Confirm rear right upper placement before installation. This arm does not include mounting hardware, so reuse or source hardware as required by the vehicle service procedure. Because the part is non-adjustable, final alignment should be checked after installation on the vehicle.

Quality Assurance

Delphi subjects its steering and suspension components to extreme temperature and salt-spray testing, along with dimensional and material analysis, to support OE-level fit and durability expectations. TC4773 is engineered for direct replacement service on the listed Hyundai Sonata and Kia Optima applications.