TRQ Front Control Arm with Ball Joint Set Compatible with Mercedes

In this review the TRQ Front Control Arm with Ball Joint Set is evaluated as a direct fit OE replacement kit for select Mercedes-Benz models. The bottom line: this 4-piece set is for DIY mechanics and independent shops needing a complete front upper and lower control arm refresh on compatible E and CLS models, and it stands out because it replaces both forward and rearward arms with pre-assembled ball joints for quicker installation. Fitment must be checked against vehicle years and 4Matic configuration before purchase.

Key Features

• Direct Fit: The kit is designed to install without modification, reducing shop time and alignment rework when matched to the correct model years.
• OE Replacement: Built to match original equipment geometry and reference numbers so the arms integrate with factory suspension points and mounting hardware.
• Complete Kit: Includes two front lower rearward and two front upper forward control arms with ball joints, providing a full front suspension overhaul in one purchase.
• Vehicle Specific: Fitment covers multiple Mercedes-Benz E and CLS model years and 4Matic variants, so buyers can confirm compatibility using the listing checks.
• Reference Numbers: Supplied aftermarket and OE reference numbers help confirm parts identity for sourcing and comparison with dealer listings.
• Cost Effective Replacement: Customers report a favorable price-to-quality ratio, making it a practical option versus purchasing individual OEM arms.

Who It's For

This set is best for owners of compatible 2010-2018 Mercedes-Benz E350, E400, E550, E250 and CLS400/CLS550 models who need front suspension renewal and prefer purchasing a matched set rather than sourcing arms individually. It is also appropriate for independent shops handling multiple repairs who value consistent fit and a single SKU solution.

It is not the ideal choice for vehicles outside the listed years and 4Matic configurations, or for buyers who need only a single arm or wish to retain original factory parts numbers without aftermarket equivalents. Always verify the OE reference numbers listed to ensure correct fitment before installation.

Pros & Cons

Pros

• Complete 4-piece set simplifies replacement of upper and lower front control arms with pre-installed ball joints.
• Designed as an OE replacement with matching reference numbers for easier cross-referencing and compatibility checks.
• Customers report good fit and ease of installation, offering solid value for money compared with buying OEM arms separately.
• Supports a range of E and CLS model years, covering multiple front suspension configurations.

Cons

• Some customers raised concerns about long-term durability of the ball joints, so buyers wanting extended service life may prefer OEM or upgraded heavy-duty options.

Specifications

Kit Contents	2 front lower rearward arms and 2 front upper forward arms with ball joints
Fitment Years	2010-2018 select Mercedes-Benz E and CLS models (see listing)
Compatibility	Includes multiple 4Matic front driver and passenger side applications
OE Reference Numbers	2123301911, 2123303111, 2123303211
Aftermarket References	1027897, 1027957, 1027958, CMS101388, RK622443 (and others listed)
Brand	TRQ

Our Verdict

The TRQ Front Control Arm with Ball Joint Set is a practical, cost-effective OE replacement option for owners and shops working on compatible Mercedes-Benz E and CLS models. It offers the convenience of a matched 4-piece kit and straightforward fit when the vehicle matches the listed years and 4Matic configuration, but buyers seeking maximum long-term durability for the ball joints should consider inspecting options or planning for periodic refreshes.

Frequently Asked Questions

Will this kit fit my E350 2014 4Matic?
Check the listing fitment and OE reference numbers; the kit covers many 2013-2014 E350 4Matic sedan and wagon front upper and lower applications.

Are the ball joints pre-installed?
Yes, the control arms in this kit include ball joints pre-assembled for the forward and rearward positions to speed up installation.

Does this replace both sides of the front suspension?
Yes, the 4-piece set replaces driver and passenger side front upper forward and lower rearward control arms.