Delphi TC7909 Suspension Control Arm - Rear Upper Forward

OE-Style Rear Upper Forward Control Arm

Delphi TC7909 is a standard replacement suspension control arm for the rear upper forward position on select Mercedes-Benz SUVs. Built with stamped steel construction and OE-focused dimensional analysis, it supports precise suspension geometry for vehicles such as the Mercedes-Benz GLE, GLS, ML, and GL platforms.

This part cross-references Mercedes-Benz A 166 350 03 06 for the same application.

Key Features

• Stamped steel construction for strength and consistent fit
• Rear upper forward suspension control arm position
• Standard replacement grade with performance-oriented design
• Not pre-greased and no grease fitting included
• Fixed design with no adjustment provision
• OE-focused material and dimensional analysis for fit accuracy

Detailed Description

Delphi TC7909 is engineered for the rear upper forward suspension location on Mercedes-Benz GLE400, GLE43 AMG, GLE63 AMG, GLE63 AMG S, GLS450, GLS550, GLS63 AMG, GLE350, GLE500, GLE550e, GLE300d, GLS350d, GL350, GL450, GL550, GL63 AMG, GLE350d, GLE450 AMG, ML250, ML350, ML400, ML550, and ML63 AMG applications. The steel, stamped construction is built to match OE dimensions and material requirements, helping maintain suspension alignment and predictable handling response. Delphi applies OE-level testing to extreme temperature and salt-spray exposure conditions to validate durability in demanding road environments.

Part number TC7909 is a direct-fit suspension control arm solution for drivers servicing the rear upper forward position on 2012-2019 Mercedes-Benz GL, GLE, GLS, and ML models. The part number TC7909 is also useful when verifying replacement against the original Mercedes-Benz reference A 166 350 03 06.

What It Helps Address

• Clunking or knocking from the rear suspension area
• Excessive play in the rear upper forward control arm
• Uneven tire wear caused by suspension geometry issues
• Steering or handling looseness related to worn rear suspension components
• Alignment problems after control arm wear or failure

Installation Notes and Tips

Install TC7909 in the rear upper forward position only. Verify vehicle year, model, and suspension layout before replacement, especially on Mercedes-Benz GLE, GLS, GL, and ML applications. Because this arm is not adjustable, a professional wheel alignment is recommended after installation to confirm suspension geometry. Inspect adjacent bushings, links, and mounting points for wear before completing the repair.

Quality Assurance

Delphi uses OE expertise in its aftermarket steering and suspension portfolio and subjects parts to temperature extremes below -40 degrees C and above 120 degrees C, along with extended salt-spray exposure. That testing approach supports durability and fit consistency for TC7909 across the listed Mercedes-Benz applications.