Delphi TC3977 Suspension Control Arm and Ball Joint Assembly - Front Left

Delphi TC3977 Front Left Control Arm Assembly

Delphi TC3977 is a front left suspension control arm and ball joint assembly built for select Ford and Lincoln applications. It combines the control arm, ball joint, bushings, dust boot, and mounting hardware in one premium replacement assembly for service work that calls for a complete front suspension repair.

Key Features

• Front left position for confirmed vehicle applications
• Ball joint included with press-in mounting type and threaded stud
• Pre-greased design with dust boot included
• Cast iron control arm construction with painted black finish
• Bushings included with rubber bushing material and black bushing color
• Mounting hardware and locking nut included
• Non-adjustable design with power steering application
• Delphi premium-grade replacement, part number TC3977

Fitment Details

• Fits 2013-2019 Ford Taurus, front left.
• Fits 2013-2019 Lincoln MKT, front left.
• Fits 2013-2016 Lincoln MKS, front left.
• Fits 2013-2015 Ford Flex, front left.

This part cross-references MOOG Chassis Products RK622916 for the same application.

Product Description

Delphi applies OE-focused engineering to its aftermarket steering and suspension portfolio, and TC3977 reflects that approach with dimensional and material analysis for fitment consistency. The assembly is tested across extreme temperature ranges and salt-spray exposure to help validate durability in demanding service conditions. For drivers servicing a Ford Taurus, Lincoln MKT, Lincoln MKS, or Ford Flex, this front left control arm assembly provides a direct replacement format that simplifies suspension repair.

Common Repair Applications

• Front-end clunking or looseness from a worn ball joint
• Uneven tire wear related to suspension wear
• Excessive play in the front left control arm assembly
• Cracked or deteriorated bushings
• Noise during braking, turning, or road impacts

Installation Notes

Verify the front left position before installation and compare the original arm, bushing spacing, and ball joint style to the replacement part. Because this assembly uses a press-in ball joint and threaded stud, proper suspension service tools and alignment procedures are recommended after installation. Confirm vehicle-specific fitment for the Ford Taurus, Lincoln MKT, Lincoln MKS, or Ford Flex before completing the repair.

Quality Assurance

Delphi backs this suspension component with OE-based design validation, including temperature cycling and corrosion testing, to support consistent aftermarket performance. Part number TC3977 is built to match the intended application with attention to material, dimensions, and assembly details.