Description
Product Overview
This 4-piece front lower control arm kit provides a complete front suspension rebuild for your 2010-2015 Mercedes-Benz GLK-Class (X204). Compatible with both the GLK250 BlueTEC diesel (2.1L) and GLK350 V6 (3.5L) in RWD and 4Matic configurations, this kit replaces all four lower control arms — forward left (MS101230), forward right (MS101231), and both rearward arms (MS101232) — eliminating clunking, vibration, and wandering caused by worn bushings and ball joints.
Key Features
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Complete 4-Arm Kit — Includes both forward (MS101230/MS101231) and both rearward (MS101232) lower control arms — covers every lower control arm on the GLK front suspension.
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Dual Engine Compatibility — Works with both the GLK250 2.1L BlueTEC turbo diesel and GLK350 3.5L V6 gasoline engines, covering all 2010-2015 GLK models.
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RWD & 4Matic Compatible — Unlike many aftermarket kits, this set fits both rear-wheel drive and all-wheel drive (4Matic) GLK configurations without modification.
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Pre-Greased Integral Ball Joints — Each arm includes a factory-installed, pre-greased ball joint sealed with a durable rubber dust boot — no separate ball joint pressing required.
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OEM Geometry Match — Arms are forged and machined to exact Mercedes X204 suspension geometry, ensuring correct camber, caster, and toe after professional alignment.
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Bolt-On Installation — Direct replacement for factory arms with no modifications. All necessary mounting hardware included.
Compatibility / Fitment
| Model |
Engine |
Drivetrain |
Years |
| GLK250 BlueTEC |
2.1L Turbo Diesel (OM651) |
RWD / 4Matic |
2013-2015 |
| GLK350 |
3.5L V6 (M276) |
RWD / 4Matic |
2010-2015 |
Chassis Code: X204. Direct fit for both standard and 4Matic drivetrains.
Technical Specifications
| Position |
Part Reference |
Quantity |
| Front Forward Left |
MS101230 |
1 |
| Front Forward Right |
MS101231 |
1 |
| Front Rearward (Both Sides) |
MS101232 |
2 |
| |
| Material |
Forged Steel, CNC Machined |
| Ball Joints |
Integral, Pre-Greased, Sealed |
| Installation |
Direct Bolt-On Replacement |
Why Choose This
A single lower control arm from the Mercedes dealer can cost $300-500. This complete 4-piece set gives you all four arms for less than the price of two OEM arms. Whether your GLK has developed the characteristic front-end clunk over bumps, steering wander on the highway, or uneven front tire wear, replacing all four arms together is the most cost-effective repair. Pre-greased ball joints mean a cleaner install, and the forged steel construction matches factory durability. Backed by iFJF's warranty.
Related Products
Frequently Asked Questions
Q: Does this fit both RWD and 4Matic GLK models?
A: Yes. Unlike many aftermarket Mercedes control arm kits, this set is compatible with both RWD and 4Matic (AWD) configurations of the GLK250 and GLK350 for all years 2010-2015.
Q: Are the ball joints replaceable or integral?
A: The ball joints are integral (built into the arm) and are not separately replaceable. When the ball joint shows wear, the entire control arm must be replaced as a unit.
Q: How long does professional installation take?
A: A professional shop typically completes this job in 2-3 hours. DIY mechanics should budget 3-5 hours, as the rearward arms require more clearance to access and torque properly.
Q: Do I need a wheel alignment after installing?
A: Absolutely. Any control arm replacement changes suspension geometry. A professional 4-wheel alignment is mandatory to prevent rapid, uneven tire wear and ensure proper handling.
Q: What are the symptoms of worn GLK control arms?
A: Common signs include: clunking or knocking from the front suspension over bumps, wandering or pulling on the highway, vibration through the steering wheel, and uneven or cupping tire wear patterns on the front tires.
Q: Is this kit as good as genuine Mercedes parts?
A: These arms are manufactured to IATF 16949 quality standards — the same certification required by Mercedes-Benz suppliers. They meet or exceed OEM specifications for fit, durability, and performance at a significantly lower price.
Q: Does it include alignment/camber bolts?
A: Standard mounting bolts are included. If your existing eccentric camber adjustment bolts are seized or corroded, you may need to source those separately. Check condition before starting the job.
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