Front Left Lower Rearward Control Arm for BMW 07-10 - Aluminium

In this review the Metrix Premium chassis front left lower rearward control arm is examined for owners of late 2000s BMW V8 models who need a reliable replacement part. The bottom line: this control arm is a direct-fit aluminium assembly that arrives pre-greased and ready to install, and its biggest selling point is that it was built to exceed OEM standards and is backed by a 3 year / 36,000 mile limited warranty, making it a practical choice for drivers who want durable suspension repairs without extensive rework.

Key Features

• Compatibility: Fits a broad range of 2002-2010 BMW models, so buyers can confidently match it to vehicles like the 650i, 750i, M6 and Alpina B7 without searching multiple SKUs.
• Pre-greased assembly: The ball joint and bushing arrive pre-greased to reduce initial wear and smooth early movement after installation.
• Aluminium construction: The aluminium material keeps the part lightweight while offering corrosion resistance compared with untreated steel components.
• OEM interchange: Cross-references include RK620121, CMS10186, CB14133 and 31126755835, making it straightforward to verify fitment against original part numbers.
• Quality certifications: Manufactured under IATF 16949 and ISO 9001 processes, which supports consistent production quality above basic aftermarket standards.
• Warranty-backed: Comes with a 3 year / 36,000 mile limited warranty from installation, offering measurable protection for peace of mind.

Who It's For

This control arm is aimed at DIY mechanics and independent shops servicing 2002-2010 BMW models that use this exact front left lower rearward location, including higher-performance variants such as the M6 and Alpina B7. It suits owners who prefer a part that arrives assembly-ready with a pre-greased joint to shorten installation time.

Customers who require an exact OEM-cast replacement from a dealership or those working on vehicles outside the listed model years should look elsewhere; the part is specific to the cited BMW models and years and relies on correct matching to the interchange numbers to ensure fitment.

Pros & Cons

Pros

• Direct-fit design for many late 2000s BMW models reduces installation uncertainty.
• Pre-greased ball joint and bushing save time and provide smoother initial operation.
• Manufactured to IATF 16949 and ISO 9001 standards, suggesting consistent quality.
• Backed by a 3 year / 36,000 mile limited warranty for added buyer confidence.

Cons

• Aluminium construction, while lightweight, may feel different to those expecting an OEM steel unit; this is a material trade-off rather than a defect.
• Fitment is limited to the listed BMW models and years, so verification against interchange numbers is required before purchase.

Specifications

Part Type	Front Left Lower Rearward Control Arm with Ball Joint & Bushing
Material	Aluminium
Quantity in Box	1
OE / Interchange	RK620121; CMS10186; CB14133; 31126755835
Compatible Models	2002-2010 BMW models including 650i, 650Ci, M6, 745i, 750i, 760i, Alpina B7
Certifications	IATF 16949, ISO 9001
Warranty	3 Year / 36,000 miles Limited Warranty

Our Verdict

The Metrix Premium front left lower rearward control arm is a sensible, warranty-backed replacement for owners of compatible late 2000s BMWs who want a pre-assembled, pre-greased unit that meets higher manufacturing standards. It represents good value for routine suspension repairs when correct fitment is confirmed, and its certifications and warranty make it a trustworthy alternative to dealership parts for many repair jobs.

Frequently Asked Questions

Will this fit my 2007 650i?
Yes, the listing shows compatibility with the 2006-2010 650i; still verify fitment using the OE interchange numbers before purchase.

Is the ball joint replaceable separately?
The assembly is supplied pre-greased as a complete unit; separate ball joint replacement depends on workshop preference but this product is intended as a full replacement arm.

What does the warranty cover?
The part includes a 3 year / 36,000 mile limited warranty from installation date; warranty terms apply to manufacturing defects and coverage details should be confirmed with the seller.