Front Left Lower Forward Control Arm w Ball Joint for 11-16 BMW 535i

Our review of the Metrix Premium chassis Front Left Lower Forward Control Arm finds it best suited for BMW owners who need a direct-fit suspension replacement that aims to meet or exceed factory standards. The bottom line: this control arm delivers a solid balance of material quality and fitment coverage for select 2011-2019 xDrive models, and its pre-greased construction makes it an easy swap for a technician or experienced DIYer. For anyone repairing a torn bushing or worn ball joint on compatible BMWs, this part is a practical, warranty-backed option.

Key Features

• Wide vehicle compatibility: Covers many xDrive models from 2011 to 2019 so it fits multiple BMW platforms without guesswork.
• Pre-greased assembly: Arrives ready to install with grease applied to reduce initial wear and ensure smoother movement from first use.
• Aluminium construction: Lightweight yet durable material helps maintain chassis geometry while resisting corrosion better than some steel alternatives.
• OE interchange numbers: Supplied with common part references like RK621979 and 31124083309 so installers can confirm fit quickly.
• Quality certifications: Manufactured to IATF 16949 and ISO 9001 standards, indicating a controlled production process and consistent quality.

Who It's For

This control arm is aimed at owners and independent mechanics working on 2011-2016 535i and 550i xDrive, 2012-2016 528i xDrive, and a range of 2012-2019 6-series xDrive and Gran Coupe models who want a plug-and-play replacement that aligns with or exceeds OEM specs. It is particularly attractive to buyers who value traceable interchange numbers and a factory-like fitment backed by a three year limited warranty.

Those who should look elsewhere include drivers with non-xDrive BMWs, earlier or much later model years outside the listed range, or anyone requiring a complete set of suspension arms rather than a single control arm. Also, if a vehicle has aftermarket suspension modifications, professional verification of geometry compatibility is recommended before purchase.

Pros & Cons

Pros

• Direct-fit compatibility across many BMW xDrive models simplifies part selection and installation.
• Pre-greased and made from aluminium for reduced initial wear and improved corrosion resistance.
• Manufactured under IATF 16949 and ISO 9001 standards and backed by a 3 year / 36,000 mile limited warranty.
• Positive customer feedback notes good fit and perceived value for money.

Cons

• Sold individually, so buyers replacing both sides or multiple arms must purchase multiples.

Specifications

Brand	METRIX PREMIUM CHASSIS PARTS
Position	Front left lower forward
Includes	Control arm with ball joint and bushing, quantity 1
Material	Aluminium
Compatible models	2011-2016 535i/550i xDrive, 2012-2016 528i xDrive, 2012-2019 6-series xDrive variants
OE / Interchange	RK621979, CMS101358, CB14333PR, 31124083309
Warranty	3 Year / 36,000 miles Limited Warranty

Our Verdict

The Metrix front left lower forward control arm is a pragmatic replacement for owners of compatible BMW xDrive models who need a reliable, well-made part that mirrors OEM form and function. With aluminium construction, pre-greased joints, and recognized quality certifications, it represents good value for a single-arm replacement and is particularly useful when a technician needs a trustworthy, warranty-backed component.

Frequently Asked Questions

Will this fit my 2014 BMW 535d xDrive?
Yes, the listed compatibility explicitly includes 2014-2016 535d xDrive models.

Is the arm ready to install right away?
Yes, the part is supplied pre-greased for extended lifespan and immediate installation.

Does the purchase include both left and right control arms?
No, the box quantity is one control arm; buy two if both sides need replacement.