Delphi TC8457 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower Control Arm Assembly

Delphi TC8457 is a front left lower suspension control arm and ball joint assembly for select Subaru Forester models. It is built as a stamped steel, pre-greased replacement with a threaded ball joint stud, rubber bushings, and included mounting hardware for a direct-service suspension repair.

Fits 2014-2018 Subaru Forester, front left lower. Delphi applies OE-focused dimensional and material analysis to help match aftermarket fit and function for the Subaru Forester front suspension.

Key Features

• Part number: TC8457
• Position: front left lower
• Stamped steel control arm construction
• Ball joint included with machined mounting type
• Pre-greased design
• Rubber bushings and dust boot included
• Painted black finish
• Clockwise (right) thread direction
• Mounting hardware and locking nut included
• Premium grade replacement

Detailed Description

This Delphi suspension control arm assembly is engineered for the front left lower position on 2014-2018 Subaru Forester applications. The assembly includes the ball joint, bushings, dust boot, and mounting hardware, helping streamline replacement of a worn front suspension component. Delphi tests parts across extreme temperature and salt-spray exposure conditions and uses dimensional and material analysis to support OE-style fitment and durability. This part cross-references MOOG Chassis Products RK622857 for the same application.

For Subaru Forester front suspension service, TC8457 provides a complete lower control arm solution with a steel stamped arm, black painted finish, and non-greaseable construction. It is a direct replacement choice for restoring front left lower suspension geometry on the listed Forester model years.

Common Problems This Part Can Address

• Clunking or knocking from the front left lower suspension
• Excessive play from a worn ball joint
• Cracked or deteriorated control arm bushings
• Uneven tire wear related to suspension looseness
• Steering instability or wandering at the front end

Installation Notes and Tips

Confirm the vehicle is a 2014-2018 Subaru Forester with the front left lower application before installation. Inspect adjacent suspension components, fasteners, and alignment settings during replacement. Because this assembly is pre-greased and non-adjustable, verify all mounting points and torque specifications during service. A professional wheel alignment is recommended after installation.

Quality Assurance

Delphi uses OE-based engineering practices for its steering and suspension portfolio, including temperature cycling, salt-spray exposure, and dimensional/material validation to support consistent replacement quality. Part number TC8457 is built to meet the demands of front suspension service on the Subaru Forester platform.