Delphi TC6879 Suspension Control Arm and Ball Joint Assembly - Front Upper

Front Upper Control Arm Assembly for BMW

Delphi TC6879 is a front upper suspension control arm and ball joint assembly built for select BMW applications. It combines an aluminum control arm, press-in ball joint, and included bushings for a direct replacement on the front upper position.

Engineered with Delphi OE-focused dimensional and material analysis, this assembly is designed for BMW 528i, 535i, 550i, 640i, 650i, 740i, 750i, 760Li, and related xDrive and GT models across the listed years.

Key Features

• Part number: TC6879
• Front upper suspension control arm and ball joint assembly
• Aluminum control arm with casting/forged construction
• Press-in ball joint included
• Pre-greased design
• Bushings included with black rubber construction
• Dust boot included with chloroprene rubber material
• Clockwise (right) thread direction
• Premium grade type
• Black finish

Detailed Description

Delphi TC6879 is a front upper control arm assembly for BMW suspension service, built to replace worn OE-style components with a complete assembly that includes the ball joint, bushings, and dust boot. The aluminum arm and press-in ball joint design support precise front suspension geometry on vehicles such as the BMW 528i, 535i, 550i, 640i, 650i, 740i, 750i, and 760Li. This part cross-references MOOG Chassis Products RK621905 for the same application.

Delphi applies OE-level dimensional and material analysis to help ensure proper fitment and consistent replacement quality. The part is pre-greased, uses a non-greaseable design, and is built with black rubber bushings and a chloroprene rubber dust boot for the front upper suspension position.

What This Part Helps Address

• Clunking or knocking from the front upper suspension
• Excessive play in the control arm or ball joint
• Uneven tire wear caused by worn suspension geometry
• Steering looseness or vague front-end response
• Visible cracking or deterioration in bushings and dust boot

Installation Notes and Tips

• Compatible with front upper suspension locations only; verify the vehicle’s exact model and drivetrain before ordering.
• Mounting hardware is not included.
• Because the ball joint is press-in, proper suspension tools and a press are recommended.
• After installation, perform a wheel alignment to confirm correct suspension angles.
• Inspect adjacent control arms, bushings, and steering components during service.

Quality Assurance

Delphi tests steering and suspension components under extreme temperature and corrosion conditions, including sub-zero and high-heat exposure plus extended salt-spray testing. The brand’s OE-focused engineering and material analysis are used to support fit and performance consistency for BMW front upper suspension service.