Delphi TC3448 Suspension Control Arm - Rear Left Upper Center

OE-Style Rear Left Upper Center Control Arm

Delphi TC3448 is a standard replacement suspension control arm for the rear left upper center position on select Mercedes-Benz SUVs. Built from stamped steel with a black cataphoresis finish, it is engineered for dimensional accuracy and consistent suspension geometry on applications such as the Mercedes-Benz GLE and GLS.

This part number, TC3448, is built around OE-focused material and fit analysis to support proper alignment and dependable rear suspension operation. It cross-references Mercedes-Benz 166 350 01 06 for the same application.

• Stamped steel construction for strength and OE-style fit
• Black cataphoresis finish for added corrosion resistance
• Natural rubber bushings included
• Press-in ball joint mounting type
• Standard replacement grade for rear suspension service
• Not adjustable; direct-fit geometry for the specified position

Detailed Product Overview

Delphi TC3448 is a rear left upper center suspension control arm designed for Mercedes-Benz vehicles that use this specific rear camber strut or upper center arm location. The part is built with a stamped steel body, rubber bearing type, and natural rubber bushings to match the suspension’s original operating characteristics. Delphi’s OE-oriented testing includes exposure to extreme temperatures and salt spray, helping validate material durability and dimensional consistency. If you are replacing a worn rear suspension arm on a Mercedes-Benz GLE400, GLE350, GLS550, or related model, TC3448 provides the correct position-specific solution.

Vehicle Fitment

• Fits 2017-2019 Mercedes-Benz GLE400, rear left upper center
• Fits 2017-2019 Mercedes-Benz GLE43 AMG, rear left upper center
• Fits 2017-2019 Mercedes-Benz GLE63 AMG, rear left upper center
• Fits 2017-2019 Mercedes-Benz GLE63 AMG S, rear left upper center
• Fits 2018-2019 Mercedes-Benz GLS450, rear left upper center
• Fits 2017-2019 Mercedes-Benz GLS550, rear left upper center
• Fits 2017-2019 Mercedes-Benz GLS63 AMG, rear left upper center
• Fits 2017-2018 Mercedes-Benz GLE350, rear left upper center
• Fits 2016-2018 Mercedes-Benz GLE550, rear left upper center
• Fits 2016-2018 Mercedes-Benz GLE550e, rear left upper center
• Fits 2017 Mercedes-Benz GLE300d, rear left upper center
• Fits 2017 Mercedes-Benz GLS350d, rear left upper center
• Fits 2013-2016 Mercedes-Benz GL350, rear left upper center, camber strut
• Fits 2013-2016 Mercedes-Benz GL450, rear left upper center, camber strut
• Fits 2013-2016 Mercedes-Benz GL550, rear left upper center, camber strut
• Fits 2013-2016 Mercedes-Benz GL63 AMG, rear left upper center, camber strut
• Fits 2016 Mercedes-Benz GLE300d, rear left upper center, camber strut
• Fits 2016 Mercedes-Benz GLE350, rear left upper center, camber strut
• Fits 2016 Mercedes-Benz GLE350d, rear left upper center
• Fits 2016 Mercedes-Benz GLE400, rear left upper center, camber strut
• Fits 2016 Mercedes-Benz GLE450 AMG, rear left upper center, camber strut
• Fits 2016 Mercedes-Benz GLE63 AMG, rear left upper center, camber strut
• Fits 2016 Mercedes-Benz GLE63 AMG S, rear left upper center, camber strut
• Fits 2015 Mercedes-Benz ML250, rear left upper center, camber strut
• Fits 2012-2015 Mercedes-Benz ML350, rear left upper center, camber strut
• Fits 2015 Mercedes-Benz ML400, rear left upper center, camber strut
• Fits 2015 Mercedes-Benz ML550, rear left upper center
• Fits 2012-2015 Mercedes-Benz ML63 AMG, rear left upper center, camber strut
• Fits 2012-2014 Mercedes-Benz ML550, rear left upper center, camber strut

Common Repair Symptoms

• Rear suspension clunking or knocking over bumps
• Uneven rear tire wear caused by worn control arm bushings
• Rear alignment drift or camber-related handling issues
• Excessive play in the rear left upper center suspension point
• Cracked or deteriorated rubber bushings on the original arm

Installation Notes

Confirm the rear left upper center position before installation, since this arm is application-specific and not adjustable. Inspect adjacent bushings, mounting points, and alignment settings during service, and replace worn hardware only if required by the vehicle service procedure. Because the ball joint is press-in and mounting hardware is not included, transfer or source the correct service components as needed for the vehicle.

Quality Assurance

Delphi applies OE-focused dimensional and material analysis to support proper fit and function in aftermarket service. The part is tested across extreme temperature ranges and salt-spray exposure to evaluate durability in demanding conditions. Part number TC3448 is built as a standard replacement for the specified Mercedes-Benz rear suspension application.