Front Left Upper Control Arm with Ball Joint for 2003-2009 350Z/G35

Our review of this front left upper control arm with ball joint finds it best suited for owners of 2003-2009 Nissan 350Z and 2003-2007 Infiniti G35 models who need a direct OE-style replacement. The bottom line: this assembly offers a vehicle-specific, direct-fit solution that closely matches original parts and restores proper front suspension geometry without the fuss of fabrication. It is a straightforward replacement for those replacing a worn or damaged upper control arm and preferrable when matching OE reference numbers and fitment is important.

Key Features

• Direct Fit: Designed as a direct fit replacement to simplify installation and avoid modification for compatible 350Z and G35 models.
• OE Replacement Assembly: Includes the control arm and ball joint as an OE-style assembly so the steering and alignment points match original equipment.
• Aluminum Construction: The control arm material is aluminum, offering a balance of strength and corrosion resistance while keeping weight down.
• Vehicle Specific Fitment: The listing provides explicit fitment details to verify compatibility with model years and body styles before purchase.
• Multiple Reference Numbers: Cross-referenced to common OE and aftermarket numbers to help confirm it matches parts lists during repairs.
• Bushings Included: Arrives with bushings installed so the unit is ready to install into the suspension mount points.

Who It's For

This part is for DIY mechanics and professional technicians working on front suspension repairs for rear-wheel-drive 2004-2006 Infiniti G35 and 2003-2009 Nissan 350Z models who want an OE-style, direct-fit assembly. It suits buyers replacing a damaged or worn upper control arm and ball joint who appreciate parts with clear fitment references and included bushings.

It is not the best choice for those who need an adjustable performance arm or a greaseable ball joint, as this assembly is non-adjustable and the ball joint mounting is machined and not greaseable. Buyers needing adjustable alignment components or aftermarket performance tuning should look for specialty control arms instead.

Pros & Cons

Pros

• Direct-fit design simplifies installation and reduces shop time compared with fabricating or modifying parts.
• The aluminum arm closely matches original equipment weight and corrosion resistance.
• Includes bushings and ball joint packaged as an assembly, making it a convenient replacement option.
• Multiple OE and aftermarket reference numbers aid in confirming correct fitment for specific vehicles.

Cons

• Some customers have reported issues related to the ball joint, indicating potential quality variation in that component.
• Not greaseable and not adjustable, so it does not suit users who need serviceable or tunable suspension parts.

Specifications

Fitment	2003-2009 Nissan 350Z, 2003-2007 Infiniti G35 front left upper
Control Arm Material	Aluminum
Ball Joint Mounting Type	Machined (non-greaseable)
Adjustable	No
Bushings Included	Yes
OE Reference Number	54525AL500
Aftermarket References	1016594, 521605, 524063, plus others

Our Verdict

The Front Left Upper Control Arm with Ball Joint is a practical, value-minded replacement for 350Z and G35 owners who need a direct-fit OE-style assembly. It restores steering geometry and arrives with bushings fitted, making it a time-saving swap. Buyers who require adjustable or serviceable joints should consider other options, but for most standard repairs this arm offers useful compatibility and clear reference numbers that make confirming fitment straightforward.

Frequently Asked Questions

Will this fit my 2005 Infiniti G35 coupe?
Yes, it is listed as compatible with 2004-2006 Infiniti G35 rear-wheel-drive front driver side upper, including the 2005 coupe.

Is the ball joint serviceable or greaseable?
No, the ball joint mounting is machined and the assembly is non-greaseable, so it is not intended for regular greasing.

Does it include bushings and hardware?
The assembly includes bushings; verify any additional mounting hardware needs for your vehicle before installation.