Delphi TC4015 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Delphi TC4015 Front Left Lower Control Arm

Delphi TC4015 is a front left lower suspension control arm and ball joint assembly built for Subaru Legacy and Subaru Outback applications. It combines a tubular steel arm with a press-in ball joint, pre-greased construction, and included bushings for a direct replacement on the front left lower position.

Key Features

• Fits 2015-2019 Subaru Legacy, front left lower
• Fits 2015-2019 Subaru Outback, front left lower
• Part number: TC4015
• Tubular steel control arm with black finish
• Ball joint included with threaded stud and press-in mounting type
• Pre-greased design with bushings, dust boot, mounting hardware, and locking nut included
• Rubber bushings and chloroprene rubber dust boot for suspension service
• Non-adjustable, power steering application

Detailed Description

Delphi TC4015 is engineered as an OE-style suspension control arm and ball joint assembly for the front left lower position on 2015-2019 Subaru Legacy and 2015-2019 Subaru Outback models. Delphi applies dimensional and material analysis to help match OE fit and function, and the part is tested across extreme temperature and salt-spray exposure conditions to verify durability in demanding road environments. The black tubular steel arm, rubber bushings, and included dust boot support a complete replacement of the worn suspension assembly. Part number TC4015 is also cross-referenced to Mevotech Supreme CMS801201 and MOOG Chassis Products RK623477 for the same application.

Common Problems This Part Can Address

• Clunking or knocking from the front left suspension
• Excessive play from a worn ball joint
• Uneven tire wear caused by loose suspension geometry
• Steering wander or reduced front-end stability
• Cracked or deteriorated bushings in the lower control arm

Installation Notes and Tips

Install TC4015 at the front left lower position only. Verify the threaded stud orientation, press-in ball joint seating, and bushing alignment before final tightening. Because this assembly is pre-greased and includes a locking nut, dust boot, bushings, and mounting hardware, confirm all supplied components are accounted for before installation. A professional alignment is recommended after replacement on Subaru Legacy and Subaru Outback suspension systems.

Quality Assurance

Delphi builds this suspension control arm and ball joint assembly using OE-focused engineering and validation methods. The part is subjected to temperature extremes below -40 degrees C and above 120 degrees C, along with 720 hours of salt-spray exposure, to help verify material durability and corrosion resistance for everyday driving conditions.