Delphi TC5612 Suspension Control Arm - Rear Upper

OE-Style Rear Upper Control Arm

Delphi TC5612 is a rear upper suspension control arm built for 2003-2004 Mazda 6 applications with non-adjustable rear upper fitment. It uses steel construction with rubber bushings to support stable suspension geometry and consistent road feel. Delphi applies OE-level dimensional and material analysis to help ensure proper fit and function.

Key Features

• Fits 2003 Mazda 6, rear upper, non-adjustable type
• Fits 2004 Mazda 6, rear upper, non-adjustable type to 08/30/2004
• Steel construction with casting/forged design
• Rubber bushings included; bushing color gray and black
• Black steel finish
• Standard replacement, performance grade
• Delphi part number TC5612

Detailed Description

This Delphi suspension control arm is engineered for the rear upper position on select Mazda 6 models. The steel body and forged/cast construction provide the structural support needed to maintain rear suspension alignment, while the rubber bushings help isolate vibration and road noise. Delphi subjects its OE-based steering and suspension components to extreme temperature and salt-spray testing to verify durability in demanding conditions. This part cross-references MOOG Chassis Products RK641005 for the same application.

Common Problems This Part Can Address

• Rear suspension looseness or clunking from worn control arm bushings
• Uneven tire wear caused by rear alignment movement
• Excessive rear-end noise over bumps and rough pavement
• Loss of stable handling from worn suspension pivot points
• Corrosion-related replacement needs on aging Mazda 6 suspension components

Installation Notes and Tips

Confirm the vehicle is a 2003 Mazda 6 or a 2004 Mazda 6 built to 08/30/2004 with non-adjustable rear upper fitment before ordering. Mounting hardware is not included, and the arm is not pre-greased. Because this is a suspension control arm, professional installation and a post-repair alignment are recommended after replacement. Delphi TC5612 should be matched to the exact rear upper position listed in the fitment data.

Quality Assurance

Delphi uses OE-focused engineering, dimensional checks, and material analysis to support fit and performance consistency. The part is also tested across extreme temperatures and extended salt-spray exposure to evaluate durability in harsh operating conditions.