Front Left Lower Control Arm with Ball Joint for GLK350/GLK250

In this review the TRQ front left lower control arm with ball joint is assessed for owners of 2010-2015 Mercedes-Benz GLK350 and 2013-2015 GLK250 models. The bottom line: this is a straightforward, vehicle-specific OE replacement that fits without modification and restores proper front suspension geometry, making it a useful repair part for DIY mechanics and shops tackling steering and alignment issues. Our review finds its biggest selling point is the direct fit design that mirrors factory reference numbers, delivering quick installation and dependable tracking for routine replacement jobs.

Key Features

• Direct Fit: Designed to match OE reference numbers so it installs without modification for compatible GLK models.
• OE Replacement Assembly: Combines the lower control arm and ball joint into one unit to simplify the repair process and reduce installation time.
• Aluminum Construction: The aluminum arm keeps unsprung weight lower while providing the structural profile expected for this application.
• Vehicle Specific Fitment: Clearly listed compatibility for 2010-15 GLK350 and 2013-15 GLK250 helps avoid ordering the wrong part.
• Bushings Included: Comes with bushings installed so the assembly is ready to mount and align once bolted in place.

Who It's For

This control arm is well suited to owners of compatible Mercedes-Benz GLK models who need a direct OE-style replacement after wear, collision damage, or failed suspension components. It is especially useful for DIY mechanics comfortable with front suspension work and for independent shops that prefer a single assembled part to save time on labor.

Those who require an upgraded, heavy-duty performance arm or a greasable ball joint should look elsewhere, as this unit is a non-greaseable, OE-style replacement focused on correct fit and value rather than reinforcements beyond factory specification.

Pros & Cons

Pros

• Fits accurately to GLK350 and GLK250 front driver side lower forward positions, reducing return visits for fitment issues.
• Combines control arm and ball joint which simplifies the repair and minimizes installation steps.
• Aluminum build helps control unsprung mass while matching original part geometry.
• Includes bushings for a ready-to-install assembly that speeds up workshop time.

Cons

• Some buyers report mixed durability compared with heavier OEM parts, so long-term toughness may vary by use.
• The ball joint is not greaseable, which could be a limitation for those preferring serviceable joints.

Specifications

Application	Front left lower forward - Driver side
Compatible Models	2010-2015 Mercedes-Benz GLK350, 2013-2015 GLK250
Material	Aluminum
Ball Joint Mounting	Machined
Greaseable	No
Bushings Included	Yes
OE Reference Numbers	2043308111 (and aftermarket refs 512-50485L, 524-523, CMS101230, RK622439)

Our Verdict

The TRQ front left lower control arm with ball joint is a practical OE-replacement choice for GLK350 and GLK250 owners who want correct fit and straightforward installation at a reasonable price. It delivers value through assembled components and accurate reference matching, though those seeking a heavy-duty upgrade or a greasable joint should consider alternatives. Overall, it is recommended for routine suspension repairs and timely restoration of front-end alignment.

Frequently Asked Questions

Will this arm fit my 2012 GLK350?
Yes, it is listed as compatible with 2010-2015 GLK350 front driver side lower forward position.

Does the ball joint allow grease fittings?
No, the ball joint is non-greaseable and is supplied as a sealed assembly in this unit.

Are bushings included or do I need extra parts?
Bushings are included with the assembly, so it is ready to install without separate bushing purchases.