Delphi TC8386 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

OE-Style Front Left Lower Control Arm

Delphi TC8386 is a front left lower suspension control arm and ball joint assembly for select Mercedes-Benz GLC models. It combines an aluminum control arm with a pre-greased ball joint, included bushings, and mounting hardware for a direct replacement focused on OE-style fit and function.

Compatible with 2016-2019 Mercedes-Benz GLC300 and 2018 Mercedes-Benz GLC350e, this Delphi TC8386 assembly is built for the front left lower position and supports precise suspension geometry on the Mercedes-Benz GLC platform.

Key Features

• Part number: TC8386
• Front left lower suspension control arm and ball joint assembly
• Aluminum control arm construction with casting/forged design
• Pre-greased ball joint with threaded stud
• Bushings included with rubber bushing material
• Dust boot included with chloroprene rubber construction
• Mounting hardware and locking nut included
• Uncoated finish with gray control arm color
• Premium grade replacement for power steering applications
• Thread direction: clockwise (right)

Detailed Description

Delphi applies OE-focused engineering to its aftermarket steering and suspension portfolio, and TC8386 reflects that approach with dimensional and material analysis aimed at matching the original part. The assembly is tested across extreme temperature ranges and salt-spray exposure to help verify durability in demanding road conditions. For Mercedes-Benz GLC300 and GLC350e models, this front left lower control arm assembly helps restore proper suspension articulation and ball-joint movement while maintaining the intended front-end geometry.

This part cross-references MOOG Chassis Products RK623647 for the same application.

What It Helps Address

• Front-end clunking or knocking from a worn lower control arm assembly
• Excessive play from a worn ball joint or deteriorated bushings
• Uneven tire wear caused by suspension geometry issues
• Steering pull or wandering on Mercedes-Benz GLC300 and GLC350e models
• Noise and vibration from damaged suspension pivot points

Installation Notes and Tips

Install TC8386 at the front left lower position only. Verify the mounting hole diameter, bushing dimensions, and ball joint orientation before installation. Because this assembly is not adjustable, final alignment should be checked after replacement. Confirm vehicle application by year, model, and position for 2016-2019 Mercedes-Benz GLC300 and 2018 Mercedes-Benz GLC350e.

Quality Assurance

Delphi uses OE-based dimensional and material analysis and subjects parts to temperature and corrosion testing to support consistent fit and performance. The brand’s OE safety technology is used on millions of vehicles worldwide, and that engineering background carries into this replacement suspension component.