Delphi TC8401 Suspension Control Arm - Rear Left Upper Forward

Delphi Rear Left Upper Forward Control Arm

Delphi TC8401 is a standard replacement suspension control arm for select Honda and Acura applications. It is built with a tubular steel construction, painted black finish, and rubber bushings to match OE-style mounting and ride characteristics.

• Part number: TC8401
• Position: Rear Left Upper Forward
• Construction: Tubular steel
• Finish: Painted black
• Bushings included: Yes
• Bushing material: Rubber
• Adjustable: No
• Greaseable: No
• Pre-greased: No
• Mounting hardware included: No

OE-Style Replacement Details

Delphi applies OE-level dimensional and material analysis to help ensure proper fit and consistent performance in the aftermarket. This control arm is built for the rear left upper forward position and is listed for 2014-2020 Acura MDX, 2016-2022 Honda Pilot, 2017-2023 Honda Ridgeline, and 2019-2022 Honda Passport. The TC8401 is a direct-fit suspension control arm for drivers replacing worn rear suspension components on these vehicles.

This part cross-references MOOG Chassis Products RK643500 for the same application.

Common Repair Reasons

• Clunking or knocking from the rear suspension
• Excessive play from worn control arm bushings
• Uneven tire wear caused by suspension looseness
• Rear-end instability or wandering during driving
• Failed inspection due to worn suspension linkage

Installation Notes

Verify the rear left upper forward position before installation and compare the original arm length, bushing layout, and mounting points to the removed part. Because mounting hardware is not included, reuse or replace fasteners as required by the vehicle service procedure. A professional alignment is recommended after suspension work.

Quality Assurance

Delphi tests steering and suspension components across extreme temperature and corrosion conditions, including sub-zero cold, high heat, and extended salt-spray exposure. That validation supports consistent OE-style fitment and durability for Honda Ridgeline, Honda Passport, Honda Pilot, and Acura MDX applications.