Mercedes Benz Lower Control Arm

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Genuine Mercedes-Benz Lower Control Arms & OEM Spares | Europarts360

The control arm is a foundational element of the Mercedes-Benz suspension system, engineered to balance the brand's ride comfort against precise handling. It connects the wheel hub to the chassis and manages the lateral and longitudinal forces generated during braking, cornering and acceleration. Whether you drive a C-Class, an E-Class, an S-Class or a GLE, the integrity of the arms, ball joints and bushings determines wheel alignment and cabin refinement.

The Wear Sequence

Failure is gradual and follows a consistent order: a knock over expansion joints and speed bumps first, then vague or wandering steering on centre, then inner-edge tyre wear that gets misdiagnosed as an alignment fault. By the time the tyres show it, the bushing has been worn for months.

What to Know Before Ordering

  • Replace the arm, not the bushing. Mercedes supplies most arms complete with the bushing and ball joint pressed in, and that is the intended repair. Pressing a new bushing into a worn arm reintroduces the fault within a year.
  • Alignment is mandatory afterwards. A four-wheel alignment is required after disturbing any arm; skipping it converts a correct repair into premature tyre wear.
  • Front and rear, left and right are frequently distinct part numbers on the same car.
  • Calendar age matters. Rubber bushings degrade with heat and time as well as mileage, so low-mileage cars in Gulf conditions still need inspection on a calendar basis.

Inferior aftermarket arms often use substandard rubber compounds and lower-grade alloys that cannot meet the damping requirements of a Mercedes-Benz, producing a harsh ride and premature failure. We supply genuine components and premium OEM replacements from manufacturers including Lemförder, TRW and Bilstein.

Related Categories

Full Mercedes-Benz catalogue → · Mercedes upper control arms → · Shocks & springs → · Wheel hubs & bearings → · Axle & steering → · All lower control arms → · Lemförder →

Fitting new arms and the bolts will not line up? Read our guide on control arm bolt alignment →

Frequently Asked Questions

  • The most frequent indicators include a clunking or knocking sound when driving over speed bumps or turning, a noticeable vibration in the steering wheel at higher speeds, and "steering wander," where the car drifts to one side. You may also notice your tires are wearing unevenly on the inner or outer edges, which is a sign the control arm is no longer holding the wheel at the correct angle.

  • On many older Mercedes-Benz models, the rubber bushings can be pressed out and replaced. However, for most modern models, the ball joint is integrated into the arm and cannot be replaced separately. Furthermore, if the arm is made of aluminum, it is often safer and more cost-effective in labor to replace the entire assembly to ensure you have a fresh ball joint and new bushings simultaneously.

  • Mercedes-Benz partners with world-class chassis specialists. When you purchase premium OEM control arms from Europarts360, you are receiving parts manufactured by Lemförder or TRW—the exact same companies that produce the "Genuine" parts for the factory in Stuttgart.

  • Many Mercedes-Benz performance models utilize forged aluminum control arms to reduce "unsprung weight," which allows the suspension to react faster to road imperfections, improving handling. Heavier SUVs like the G-Wagon may use cast steel or iron for raw strength. You must always replace your arms with the same material originally specified for your VIN to maintain the car's intended balance.

  • Yes, absolutely. Replacing a control arm fundamentally changes the geometry of your suspension. Even with a perfect factory-spec part, a professional four-wheel alignment is mandatory to ensure your steering wheel is centered and to prevent your tires from wearing out prematurely.

  • While a clunk is usually a loose ball joint or torn bushing, a "creaking" or "squeaking" sound often points to a dried-out ball joint or a rubber bushing that has hardened and cracked. This is particularly common in older C-Class (W204/W205) and E-Class models.

  • It is highly recommended. If the bushings on your driver-side control arm have dry-rotted or collapsed, the passenger side is likely in a similar condition. Replacing them in pairs (left and right) ensures consistent handling and saves you from paying for a second alignment shortly down the road.

  • Many Mercedes-Benz front suspensions utilize a "multi-link" setup. The Lower Control Arm is usually the larger, rearward-facing arm that supports the spring or strut. The Thrust Arm (also called a Tension Strut) is the forward-facing arm that manages braking forces. We carry both for all major models.

  • Under normal driving conditions, Genuine Mercedes-Benz control arm bushings and ball joints typically last between 60,000 and 100,000 miles. However, frequent driving over potholes, heavy road salt, or aggressive cornering can shorten this lifespan significantly.

    • Genuine Parts: These are the exact components installed at the factory, arriving in the original vehicle manufacturer’s branded packaging (e.g., Porsche or BMW).
    • OEM Parts: These are produced by the same manufacturers that supply the car brands (e.g., Bosch, Brembo, Lemförder) but are sold in the supplier’s own packaging, often at a more competitive price.
    • Aftermarket Parts: These are third-party components designed to meet or exceed original specifications.