Delphi TC1949 Suspension Control Arm - Rear Left Upper Rearward

OE-Style Rear Left Upper Rearward Control Arm

Delphi TC1949 is a suspension control arm built for the rear left upper rearward position on select Mercedes-Benz applications. It uses aluminum construction with a casting/forged design, neoprene rubber bushings, and a standard replacement grade to support precise suspension geometry in the rear suspension.

Fits 2003-2012 Mercedes-Benz E-Class, SL-Class, and CLS-Class applications in the rear left upper rearward position, including Mercedes-Benz E320, E350, E500, SL500, and SL550 listings. Delphi applies OE-level dimensional and material analysis to help match the original part’s fit and function.

Key Features

• Part number TC1949
• Aluminum control arm with casting/forged construction
• Neoprene rubber bushings included
• Standard replacement suspension component
• Passivation finish for added surface protection
• Rear left upper rearward position
• No ball joint included
• No grease fitting and not pre-greased

Detailed Description

This Delphi suspension control arm is engineered for Mercedes-Benz rear suspension service where accurate alignment and stable wheel control matter. The aluminum construction helps maintain strength while keeping the part consistent with OE-style dimensions, and the included bushings support proper articulation at the mounting points. Delphi subjects its OE and aftermarket steering and suspension components to extreme temperature and salt-spray testing, along with dimensional and material analysis, to help maintain fit and durability in demanding conditions. This part cross-references Mevotech Supreme CMS101102 for the same application.

Common Problems This Part Can Address

• Rear suspension looseness or clunking from worn arm bushings
• Uneven rear tire wear caused by suspension geometry changes
• Rear-end instability during braking or cornering
• Excessive play in the rear left upper rearward suspension link
• Alignment issues after bushing or arm wear

Installation Notes and Tips

• Verify vehicle fitment by year, model, and rear left upper rearward position before installation.
• Inspect adjacent suspension bushings and mounting points for wear or corrosion during service.
• Because mounting hardware is not included, reuse or source the correct hardware separately as needed.
• Have the rear suspension aligned after installation to confirm proper geometry.
• For 2008-2009 Mercedes-Benz E300 applications, confirm the vehicle is without Airmatic Dual Control and without air suspension.

Quality Assurance

Delphi uses OE-focused engineering, dimensional checks, and material analysis to support consistent fit and performance. The part is tested across extreme temperature ranges and extended salt-spray exposure to evaluate durability in real-world conditions.