Front Left Lower Rearward Control Arm for 03-09 350Z & 03-07 G35

In this review the Metrix Premium control arm is evaluated for owners who need a reliable front left lower rearward suspension part for 2003-2007 Infiniti G35 RWD and 2003-2009 Nissan 350Z models. The bottom line: this aluminum replacement part stands out because it is built to exceed OEM standards and arrives with a 3 year / 36,000 mile limited warranty, making it a practical choice for drivers who value longevity and a near-direct fit. Installation notes from users show good fit and straightforward swapping, which reinforces its appeal for DIY mechanics and repair shops.

Key Features

• Vehicle compatibility: Direct replacement fit for 2003-2007 Infiniti G35 RWD and 2003-2009 Nissan 350Z, helping reduce fitment guesswork for these models.
• Material construction: Made from aluminium to balance strength and weight, which can aid long-term suspension performance without adding unnecessary mass.
• OE interchange: Supplied to match OE/interchange numbers like RK621373 and 54469CD00C, simplifying parts lookup and ensuring correct application.
• Complete assembly: Includes the ball joint, bushing assembly and a cotter pin so installers have the main hardware needed for a proper assembly swap.
• Quality standards: Designed and manufactured to IATF 16949 and ISO 9001 certified processes, indicating manufacturing controls that exceed typical OEM requirements.
• Warranty support: Comes with a 3 Year / 36,000 miles limited warranty from installation date, offering post-installation confidence.

Who It's For

This part targets owners of rear-wheel drive Infiniti G35s (2003-2007) and Nissan 350Zs (2003-2009) who need a dependable, OE-style front left lower rearward control arm for repair or restoration. It is suited to independent mechanics and experienced DIYers who prefer a single-part replacement that includes the ball joint and cotter pin to streamline installation.

Those who should look elsewhere include drivers with modified suspension geometry or nonstandard custom setups, and owners of other vehicle models outside the listed compatibility. For fleets or users requiring dealer-level branded components, an original equipment manufacturer part might be preferred.

Pros & Cons

Pros

• Built from aluminium for a good strength-to-weight ratio that matches common aftermarket expectations.
• Includes the ball joint, bushing assembly and cotter pin, reducing the need to source extra components.
• Manufactured under IATF 16949 and ISO 9001 standards and backed by a 3 year / 36,000 mile warranty, providing measurable quality assurance.
• Customers report solid fit and straightforward installation, which saves time in garage repairs.

Cons

• Not an OEM-branded original; some buyers seeking factory-labeled parts may prefer an OEM option.
• Aluminium construction can be less desirable in extremely high-impact crash scenarios compared with heavier steel options, depending on preference.

Specifications

Application	2003-2007 Infiniti G35 RWD, 2003-2009 Nissan 350Z
Position	Front Left Lower Rearward
Material	Aluminium
Includes	Ball joint, bushing assembly, cotter pin (quantity 1)
OE/Interchange	RK621373, CMS30165, 521-601, 54469CD00C
Quality Standards	IATF 16949 and ISO 9001 certified
Warranty	3 Year / 36,000 miles Limited Warranty

Our Verdict

The Metrix Premium front left lower rearward control arm is a practical replacement for compatible Infiniti and Nissan models, offering good fit, included hardware and manufacturing certifications that exceed OEM standards. For most owners seeking a durable, warranty-backed aftermarket replacement that installs cleanly and performs reliably, this part represents strong value compared with sourcing separate components.

Frequently Asked Questions

Is this a direct fit for a 2007 Infiniti G35 RWD?
Yes, the part lists compatibility with 2003-2007 Infiniti G35 RWD models and is intended as a direct replacement for that position.

Does the kit include the ball joint and installation hardware?
Yes, the assembly includes the ball joint, bushing assembly and a cotter pin so installers receive the main components needed for replacement.

What warranty is provided?
The part is backed by a 3 Year / 36,000 miles limited warranty from the date of installation.