Front Left Lower Control Arm for 1999-2005 & 1990-1997 Mazda Miata

In this review the Metrix Premium chassis front left lower control arm is evaluated for Miata owners seeking a durable, OEM-exceeding replacement. The bottom line: this is a straightforward, high-value replacement part for 1999-2005 and 1990-1997 Mazda Miata models that prioritizes fit and durability. The reviewer found installation to be uncomplicated for a competent DIYer or independent shop, and the steel construction plus included cotter pin make it a no-surprise swap that addresses worn suspension geometry with a single, reliable component.

Key Features

• Direct Compatibility: Fits 1999-2005 Mazda Miata and 1990-1997 Mazda Miata models so buyers can replace a worn arm without modification.
• Steel Construction: The steel material provides strength and resistance to bending under normal road loads for long-term stability.
• Includes Cotter Pin: Ships with a cotter pin so critical fastener retention is covered during installation and lowers the need to source small parts.
• OE Interchange Numbers: Matches RK642622, CMS80176, 524-467 and N06634360 which helps confirm correct fit for vehicles using those reference numbers.
• Quality Management Certified: Built to IATF 16949 and ISO 9001 standards, indicating consistent manufacturing and quality control for reliable replacement parts.
• Warranty Backed: Comes with a 3 Year / 36,000 miles limited warranty from installation to provide buyer confidence in durability.

Who It's For

This control arm is aimed at Mazda Miata owners and independent mechanics who need an exact-fit front left lower control arm for the listed model years and prefer a part that exceeds OEM standards. It is especially suitable for those who value traceable interchange numbers and certificate-backed manufacturing.

It is not intended for drivers seeking custom suspension geometry, aftermarket performance arms with adjustable alignment features, or for vehicles outside the specified model years. Buyers who want lightweight alloy or adjustable performance arms should look elsewhere.

Pros & Cons

Pros

• Accurate fit for both 1999-2005 and 1990-1997 Miata models, reducing installation time and alignment surprises.
• Solid steel construction that customers report as having good quality and functionality for everyday use.
• Includes a cotter pin and lists multiple OE interchange numbers to verify compatibility.
• Backed by IATF 16949 and ISO 9001 certified manufacturing plus a 3 year / 36,000 mile limited warranty.

Cons

• Not a performance-adjustable arm; those seeking track-focused adjustability will need a different aftermarket option.
• Steel construction is durable but heavier than some aftermarket alloy alternatives.

Specifications

Application	1999-2005 Mazda Miata; 1990-1997 Mazda Miata
Position	Front left lower control arm
Material	Steel
Includes	1 control arm; cotter pin
OE / Interchange	RK642622, CMS80176, 524-467, N06634360
Certifications	IATF 16949, ISO 9001
Warranty	3 Year / 36,000 miles limited warranty

Our Verdict

The Metrix Premium front left lower control arm is a sensible replacement for Miata owners who want a dependable, well-documented part that fits without fuss. With steel construction, included cotter pin, and manufacturer quality certifications plus a three-year warranty, it represents good value for routine suspension repair. Choose this arm for correct fit and peace of mind; performance-focused buyers should consider specialty adjustable arms instead.

Frequently Asked Questions

Will this control arm fit my Miata?
If your vehicle is a 1999-2005 or 1990-1997 Mazda Miata, this front left lower control arm is specified to fit; verify with listed OE interchange numbers if unsure.

Are any small parts included?
The part ships with a cotter pin included to secure the ball joint nut during installation.

Is this part warrantied?
Yes, Metrix provides a 3 Year / 36,000 miles limited warranty from the date of installation for this chassis part.