Metrix Premium Front Left Lower Rearward Control Arm w Bushing

Our review of the Metrix Premium Front Left Lower Rearward Control Arm finds it best for owners of late2000s Mercedes-Benz CLS and E models who need a direct replacement that prioritizes durability and fit. The control arm is designed and manufactured to exceed OEM standards, and its pre-greased bushing aims to reduce initial breakin noise and wear. For someone repairing suspension on a 2007-2011 CLS or compatible Eclass, the single biggest reason to buy is the combination of OE interchangeability and warranty coverage that simplifies longterm ownership.

Key Features

• Compatibility: Fits a wide range of 2007-2011 MercedesBenz CLS and 2007-2009 E models, providing a direct replacement for affected vehicles.
• Pre-greased bushing: The included pre-greased bushing reduces initial friction and can help minimize creaks during the first miles after installation.
• Steel construction: Built from steel for strength, the arm delivers the rigidity expected for suspension control in heavy, performanceoriented sedans.
• OE interchange numbers: Marked with RK620187, CMS10143, 528-341 and 2113308107 for straightforward verification against dealer parts lists.
• Quality standards: Manufactured under IATF 16949 and ISO 9001 processes, which supports consistent production quality and traceability.
• Warranty backed: Comes with a 3 Year / 36,000 mile limited warranty from date of installation for added buyer confidence.

Who It's For

This control arm is ideal for independent mechanics, DIY enthusiasts, and small shops servicing MercedesBenz CLS350 (Mexico), CLS500 (Mexico), CLS550, CLS63 AMG and the listed Eclass RWD variants from 2007 to 2009. It suits owners who want an aftermarket part that closely follows OE fit and function while offering a manufacturer warranty.

Customers who need compatibility beyond the listed model years or those seeking a direct OEM branded part for dealer service may prefer to compare exact dealer numbers first. Also, those looking for an adjustable performance arm should look elsewhere, as this is a direct replacement designed for stock geometry.

Pros & Cons

Pros

• Good fitment for covered Mercedes models, with multiple OE interchange numbers to confirm compatibility.
• Pre-greased bushing helps with smoother movement and potentially reduced early noise.
• Manufactured under IATF 16949 and ISO 9001, which supports consistent quality.
• Backed by a 3 Year / 36,000 mile limited warranty for added reliability.

Cons

• Not an adjustable or performance arm; intended as a direct replacement for standard suspension geometry.
• Compatibility is limited to the specific Mercedes model years listed, so verification is needed before purchase.

Specifications

Brand	Metrix Premium Chassis Parts
Part type	Front left lower rearward control arm w bushing
Material	Steel
Quantity in box	1
OE / interchange	RK620187, CMS10143, 528-341, 2113308107
Warranty	3 Year / 36,000 miles limited
Certifications	IATF 16949, ISO 9001

Our Verdict

For owners of the listed MercedesBenz CLS and E models seeking a reliable direct replacement, this Metrix control arm offers solid value because of its OE interchangeability, pre-greased bushing and manufacturer warranty. It is not aimed at performance adjustment but is a sensible, warrantybacked option for restoring factory suspension function and reducing longterm maintenance uncertainty.

Frequently Asked Questions

Will this part fit my 2008 CLS550?
Yes, the part lists compatibility with 2007-2011 CLS550 models; check OE interchange numbers to confirm exact fit.

Does the bushing require additional lubrication after install?
The bushing is pre-greased for extended lifespan, so no immediate additional lubrication is typically required.

What warranty covers this control arm?
The product includes a 3 Year / 36,000 mile limited warranty from date of installation.