Delphi TC1947 Suspension Control Arm - Rear Left Upper Forward

OE-Style Rear Left Upper Forward Control Arm

Delphi TC1947 is a suspension control arm built for the rear left upper forward position on select Mercedes-Benz applications. It uses aluminum construction with a casting/forged design and a passivated finish to support consistent fit and corrosion resistance in demanding underbody conditions.

Engineered with Delphi OE expertise, this replacement arm is built around dimensional and material analysis for strong OE-to-aftermarket compatibility. It is a direct-fit suspension component for Mercedes-Benz E-Class and SL-Class models that need a rear left upper forward control arm replacement.

Key Features

• Aluminum control arm with casting/forged construction
• Passivated finish for added surface protection
• Includes bushings with neoprene rubber bushing material
• Standard replacement grade for suspension service
• Non-adjustable design for OE-style fitment
• Position: rear left upper forward
• Delphi part number TC1947

Detailed Description

This Delphi suspension control arm is built for vehicles that require a rear left upper forward arm in the rear suspension assembly. It fits 2002-2006 Mercedes-Benz SL500, 2003-2006 Mercedes-Benz E500, 2003-2006 Mercedes-Benz E55 AMG, 2003-2009 Mercedes-Benz E320, 2004-2011 Mercedes-Benz SL600, 2006-2009 Mercedes-Benz E350, 2006-2009 Mercedes-Benz E300 without Airmatic Dual Control and without Air Suspension, 2006 Mercedes-Benz CLS500, 2007-2009 Mercedes-Benz E550, 2007-2011 Mercedes-Benz CLS550, 2007-2012 Mercedes-Benz SL550, 2007 Mercedes-Benz E280, and 2005-2009 Mercedes-Benz SL65 AMG. Delphi TC1947 is also cross-referenced to Beck/Arnley 102-6304 and 102-6441 for the same application.

For Mercedes-Benz E-Class and SL-Class suspension repair, TC1947 helps restore the correct rear suspension geometry when the original arm is worn, bent, or noisy. The aluminum body, included bushings, and OE-focused dimensional checks support accurate alignment and predictable suspension movement.

What It Helps Fix

• Rear suspension clunking or knocking from worn arm bushings
• Excessive rear wheel movement caused by a damaged control arm
• Uneven tire wear related to rear suspension geometry issues
• Alignment problems after suspension wear or impact damage
• Loose or unstable rear-end handling on Mercedes-Benz E-Class and SL-Class models

Installation Notes and Tips

Install Delphi TC1947 in the rear left upper forward position only. Verify vehicle configuration before ordering, especially for 2008-2009 Mercedes-Benz E300 models, which are listed without Airmatic Dual Control and without Air Suspension. Because mounting hardware is not included, reuse or source the correct hardware as needed and complete a professional alignment after installation.

Quality Assurance

Delphi applies OE-level testing and material analysis to its steering and suspension portfolio. This control arm is evaluated for extreme temperature exposure and salt-spray resistance to support durability in real-world service conditions. Part number TC1947 reflects Delphi’s OE-focused replacement approach for Mercedes-Benz suspension repair.