Delphi TC6623 Suspension Control Arm - Rear Lower Rearward

OE-Style Rear Lower Rearward Control Arm

Delphi TC6623 is a standard replacement suspension control arm for the rear lower rearward position. It is built from steel with a black finish and is engineered for direct-fit service on select Lexus RX and Toyota Highlander applications.

For drivers searching for a rear lower rearward control arm for 2004-2007 Toyota Highlander or 2004-2006 Lexus RX330, this part number provides an OE-focused replacement backed by Delphi’s dimensional and material analysis.

Key Features

• Steel construction for suspension service durability
• Black finish
• Standard replacement, regular grade
• Position: rear lower rearward
• Not adjustable
• Pre-greased: no
• Grease fitting included: no
• Bushings included: no
• Mounting hardware included: no

Detailed Description

Delphi TC6623 is a suspension control arm designed for OE-style fit and function in the rear lower rearward location. Delphi applies OE engineering methods to its aftermarket steering and suspension portfolio, including dimensional and material analysis to help maintain compatibility with the original vehicle design. The part is tested across extreme temperature ranges and salt-spray exposure to support long-term service in demanding conditions.

This control arm is a direct replacement for select Lexus RX350, Lexus RX400h, Lexus RX330, and Toyota Highlander models. If you are replacing a worn rear lower rearward arm on a 2007-2009 Lexus RX350, 2006-2008 Lexus RX400h, 2004-2007 Toyota Highlander, or 2004-2006 Lexus RX330, Delphi TC6623 matches the listed application.

This part cross-references MOOG Chassis Products RK642138 for the same application.

What It Helps Fix

• Rear suspension looseness or instability
• Clunking or knocking from the rear suspension area
• Uneven tire wear caused by worn suspension geometry
• Excessive play from a fatigued control arm
• Handling drift or reduced rear-end control

Installation Notes and Tips

Verify the rear lower rearward position before ordering. This part is not adjustable and does not include bushings, grease fitting, or mounting hardware, so inspect related components before installation. Because suspension wear often affects alignment, a professional alignment check after replacement is recommended.

Quality Assurance

Delphi uses OE-based engineering and validation for its aftermarket steering and suspension parts. TC6623 is evaluated for temperature extremes and salt-spray resistance, with dimensional and material analysis used to support proper fitment on the listed Lexus RX and Toyota Highlander applications.