TRQ Rear Left Lower Control Arm with Ball Joint - Direct Fit Driver

In this review the TRQ Rear Left Lower Control Arm with Ball Joint is judged on fit, durability, and ease of installation for several ML-class Mercedes models. It is aimed at owners who need a straight replacement for a damaged rear lower control arm and want a pre-assembled, direct-fit unit that reduces install time. The single biggest reason to consider this part is its direct replacement design and included bushings, which make it a practical option for DIY installers and independent shops replacing rear driver side lower arms on compatible ML models.

Key Features

• Direct fit replacement: Pre-assembled construction means it installs without modification for a precise match to the original mounting points.
• Included bushings: Bushings are supplied to restore proper suspension geometry and reduce the need to source additional components.
• Steel construction: The steel control arm offers durability for road use and resists bending under typical loads.
• Machined ball joint mount: The machined mounting surface helps ensure correct ball joint alignment for predictable handling.
• Wide compatibility: Built to fit multiple Mercedes-Benz ML models from 1998 through 2005, making it useful for several common repairs.
• Reference cross numbers: Multiple reference numbers are provided to help verify fitment with aftermarket and OEM sources.

Who It's For

This control arm is best for Mercedes ML owners and independent mechanics who need a driver side rear lower rearward arm for 1998-2005 ML models and prefer a ready-to-install, steel assembly with bushings included. It suits people who want to save time by using a direct-fit part rather than fabricating or modifying components.

Customers who require a fully greasable or adjustable aftermarket performance arm, or those seeking a lifetime greasable ball joint, should look elsewhere. Also, buyers who need a left front or right side arm must confirm exact fitment, as this unit is specifically for the rear left lower location.

Pros & Cons

Pros

• Direct-fit design simplifies installation and reduces labor time.
• Included bushings mean fewer parts to source and a cleaner repair process.
• Solid steel construction delivers a sturdy replacement for worn factory arms.
• Good compatibility coverage across ML320, ML350, ML430, ML500, and ML55 AMG model years.

Cons

• Some customers report occasional ball joint issues, so thorough inspection after installation is advised.
• Not greaseable and not adjustable, which may limit long-term serviceability for some users.

Specifications

Brand	TRQ
Fitment	Rear driver side lower rearward for specified ML models
Material	Steel
Ball joint mounting	Machined
Bushings	Included
Adjustable	No
Greaseable	No

Our Verdict

The TRQ Rear Left Lower Control Arm with Ball Joint is a sensible, cost-effective replacement for owners of compatible Mercedes ML vehicles who want a ready-to-install, steel assembly with bushings included. It delivers dependable fitment and saves time compared with sourcing separate components, though buyers should be aware it is not greaseable or adjustable and to inspect the ball joint during installation.

Frequently Asked Questions

Will this arm fit my ML350 from 2004?
Yes, the control arm is listed as compatible with 2003-2005 ML350 models for the rear driver side lower rearward position.

Are replacement bushings required separately?
No, this unit ships with bushings included so separate bushing purchases are not normally needed.

Is the ball joint serviceable or greaseable?
The ball joint mounting is machined but the part is not greaseable; periodic inspection is recommended.