Delphi TC4037 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower Control Arm for Explorer

Delphi TC4037 is a front left lower suspension control arm and ball joint assembly for select Ford Explorer models. It combines a steel casting/forged construction with a pre-greased ball joint, rubber bushings, and a painted black finish for a direct replacement on the front suspension.

Fits 2011-2019 Ford Explorer, front left lower. This Delphi TC4037 assembly is built for power steering applications and includes the ball joint, dust boot, bushings, locking nut, and mounting hardware specified in the product data.

Key Features

• Part number: TC4037
• Position: front left lower
• Steel control arm with casting/forged construction
• Pre-greased ball joint included
• Dust boot and bushings included
• Black painted finish
• Threaded ball joint stud with clockwise (right) thread direction
• Mounting hardware and locking nut included
• Non-adjustable, premium grade assembly

Detailed Description

Delphi applies OE-focused dimensional and material analysis to its aftermarket steering and suspension portfolio, and the TC4037 follows that approach with a direct-fit front left lower control arm assembly. The steel arm uses a black painted finish, rubber bushings, and a chloroprene rubber dust boot to support consistent suspension operation. The ball joint is pre-greased and supplied as part of the assembly for a complete replacement on the Ford Explorer front suspension.

Compatible with 2011-2019 Ford Explorer front left lower applications, Delphi TC4037 is a practical choice when replacing a worn control arm and ball joint assembly on the Explorer. This part cross-references MOOG Chassis Products RK622215 for the same application.

What This Part Helps Address

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

Installation Notes and Tips

Verify the front left lower position before installation and confirm the threaded stud orientation, mounting hole diameter, and overall arm dimensions against the removed part. Because this assembly is non-adjustable, final alignment should be checked after installation on the vehicle. Inspect adjacent suspension components for wear before completing the repair.

Quality Assurance

Delphi subjects its OE-style steering and suspension parts to temperature extremes below -40 degrees C and above 120 degrees C, along with extended salt-spray exposure and dimensional/material analysis for fit consistency. The TC4037 is built to support OE-level compatibility expectations for the listed Ford Explorer applications.