Step-by-step instructions for replacing the lower forward control arm. Check out this article if you need to replace the front rearward control arm.
Parts Needed: Front Lower Forward Control Arm, Thrust Arm, or Torque Strut.
- Left Front Lower Forward Control Arm, RWD only: 2113304911
- Right Front Lower Forward Control Arm, RWD only: 2113305011

SPECIAL TOOLS NEEDED:
Applications:
- E-Class, including E320, E350, E500, E550, E55 AMG, and E63 AMG. Verify exact fitment by VIN. Years: 2003-2009
- CLS-Class, including CLS500, CLS550, CLS55 AMG, and CLS63 AMG. Verify exact fitment by VIN. Years: 2005-2010
INSTRUCTIONS
- Loosen the lug nuts before you raise the car.

- Raise the car. Support the vehicle securely with jack stands. Never rely on a jack alone.

- Remove the front wheel.

- Remove the plastic trim panels at the front of the wheel well.

- Remove the bolt from the ball joint at the steering knuckle.

Remove the nut at the steering knuckle and press the radius rod out of the steering knuckle. - Remove the nut from the bolt where the control arm/torque strut connects to the frame. Hold the bolt head on the opposite side while loosening the nut.

- Remove the bolt, then remove the control arm.

- Install the new forward control arm and loosely install the inner fastener. Connect the arm to the steering knuckle. Support the steering knuckle with a jack until the suspension is near normal ride height, then finally tighten the inner fastener. Torque the bolt to 80 Nm plus 120 degrees at the subframe

- Connect the control arm to the steering knuckle. Torque the bolt to 50 Nm plus 60 degrees at the steering knuckle.
Reinstall the wheel. Lower the vehicle and tighten the wheel bolts evenly in a cross pattern to 130 Nm. Recheck all suspension fasteners before driving. Have the front wheel alignment checked, especially if the vehicle pulls, the steering wheel is off center, or tire wear is uneven.
Symptoms of a Worn Front Lower Forward Control Arm:
- A worn control arm or torque strut may cause a thump or knock during hard braking.
- Squeaking noises from the front suspension.
If you have any questions or comments, please post them in the comments section below.








