Guide to 2006-2017 Mercedes-Benz E350 Suspension Control Arm Replacement
Restore your E350's signature ride quality by understanding and choosing the right aftermarket control arms.
- A clunking noise over bumps and unstable steering are the most common signs of a failing control arm on an E350.
- Always perform a four-wheel alignment immediately after replacing any control arms to prevent uneven tire wear and ensure safety.
- For best results and longevity, choose OE-quality brands like Lemförder or Febi; they are often the original part manufacturer.
- It is highly recommended to replace control arms in pairs (left and right) to maintain balanced suspension performance.
Is Your E350's Ride Not What It Used to Be?
The control arms on your 2006-2017 Mercedes-Benz E350 are built to last, but the bushings and ball joints that are part of the arm assembly are wear-and-tear items. Over time, the rubber bushings crack and the ball joints loosen, leading to a number of noticeable symptoms. Ignoring these signs can lead to poor handling, faster wear on other suspension parts, and an uncomfortable ride.
Common Symptoms of a Failing Control Arm
If you're experiencing any of the following, it might be time to inspect your control arms:
🎬 Watch: This suspension diagnostic guide helps you identify worn components.- Clunking or Knocking Noises: A metallic clunking sound, especially when going over bumps or making turns, is a classic sign of a worn ball joint or bushing.
- Steering Wheel Vibration: Vibrations that you can feel through the steering wheel, which may change with speed, often point to failing control arm bushings.
- Wandering or Unstable Steering: If your E350 pulls to one side or feels like it's 'wandering' on the road, requiring constant steering correction, the control arms may be to blame for the loss of alignment.
- Uneven Tire Wear: Worn control arms can throw off your car's alignment, causing the inner or outer edges of your tires to wear down much faster than normal.
Known Issues: Recalls & TSBs
For the 2007-2009 E350 4MATIC Wagon models with rear air suspension, Mercedes-Benz issued a recall (NHTSA Campaign ID: 12V264000) for a connecting rod in the load-leveling system that could fail, potentially reducing vehicle control. While not a control arm itself, it's a critical suspension link. Additionally, several Technical Service Bulletins (TSBs) exist for creaking or squeaking noises from the front axle on W212 models (2010-2017), which can sometimes be related to control arm components. 🎬 Check out this fix for common front end clunking noises. Always check if your specific VIN is affected by any recalls.
Choosing the Right Aftermarket Control Arm
When replacing control arms on a Mercedes-Benz, the quality of the part matters. Using a low-quality part can result in a poor fit, premature failure, and having to do the job all over again. Here’s a breakdown of aftermarket brand tiers to help you choose wisely.
Tier 1: OE-Quality & Premium Aftermarket
These brands are often the original equipment manufacturer (OEM) for Mercedes-Benz or are known for producing parts that meet or exceed OEM specifications. They are the best choice for longevity and a perfect fit.
- Lemförder: Often the actual OEM supplier for Mercedes suspension parts. You may even find parts with the Mercedes-Benz star ground off. This is a top-tier choice for a factory-quality repair.
- CRP (Rein): CRP often packages parts from OEM suppliers like Lemförder, making them another excellent choice for quality.
- Febi Bilstein / TRW: Both are reputable German brands with a long history of supplying quality parts to European car manufacturers. They are considered a solid choice for a durable repair.
Tier 2: Reputable Mid-Grade Options
These brands offer a good balance of quality and price. They are a solid choice for daily drivers and those looking for a reliable repair without the premium price tag.
- Mevotech (Supreme Line): Mevotech's 'Supreme' series is generally considered a good quality replacement, often engineered to be more durable than the original. Some forum users have had positive long-term experiences.
- Moog: A well-known aftermarket brand, Moog parts are often seen as a durable 'problem-solver' option.
- Delphi: A large, reputable parts manufacturer that provides solid, reliable components.
Tier 3: Economy/Budget Brands
These brands offer the lowest price point, but quality and longevity can be inconsistent. They might be suitable for a temporary fix or if budget is the absolute primary concern, but be aware of the potential for premature wear.
- URO Parts: Reviews on URO parts are very mixed. While some have had acceptable experiences with non-critical parts, many forum users report premature failures on suspension components like control arms.
- Suspensia / Unbranded Kits: These are typically the most affordable but carry the highest risk of poor fitment and short service life. Use with caution.
Estimated Replacement Costs
The cost to replace a control arm can vary significantly based on your location, the brand of part you choose, and whether you do the work yourself.
| Item | Estimated Cost |
|---|---|
| New OEM Control Arm (per arm) | $250 - $450+ |
| New Aftermarket Control Arm (per arm) | $25.91 - $361.01 |
| Shop Labor (per side) | $220 - $330 |
| Total Professional Replacement (per side, aftermarket) | $250 - $700+ |
| Wheel Alignment (Required) | $100 - $200 |
Frequently Asked Questions
Do I have to get an alignment after replacing a control arm?
Yes, absolutely. Replacing a control arm will alter your vehicle's suspension geometry. A four-wheel alignment is required to ensure proper handling, prevent tire wear, and maintain safety.
Should I replace control arms in pairs?
It is highly recommended. If a control arm has failed on one side due to age and mileage, the one on the other side is likely not far behind. Replacing them in pairs ensures that your suspension is balanced and predictable. It also saves you from paying for labor and another alignment in the near future.
How many control arms does my E350 have?
The Mercedes-Benz E350 uses a multi-link suspension design. The front suspension typically has two lower control arms (a forward 'thrust arm' and a rearward 'spring link') and one upper control arm per side. The rear suspension also has multiple links. It's important to correctly identify which specific arm needs replacement.
Can I replace just the bushings or ball joints?
While it is sometimes possible to press out old bushings and press in new ones, it requires special tools and is a much more labor-intensive job. Most modern control arms, especially in the aftermarket, are sold as a complete assembly with new bushings and a ball joint pre-installed. This is the recommended, easier, and often more reliable method of repair.
Helpful Videos
Technical Specifications
OEM Part Numbers: 2123302911 2123303011 2123302711 2123302811 2123303111 2123303211
The 2006-2017 E350 uses a multi-link suspension. The W211 (2006-2009) and W212 (2010-2017) generations have different part numbers and designs, so it is critical to order for your specific year and drivetrain (RWD vs. 4MATIC). Control arms are typically made of cast aluminum or steel and come as an assembly with pre-installed bushings and ball joints.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Mercedes-Benz E350:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your E350's Ride Not What It Used to Be?
- Common Symptoms of a Failing Control Arm
- Known Issues: Recalls & TSBs
- Choosing the Right Aftermarket Control Arm
- Tier 1: OE-Quality & Premium Aftermarket
- Tier 2: Reputable Mid-Grade Options
- Tier 3: Economy/Budget Brands
- Estimated Replacement Costs
- Frequently Asked Questions
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