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If you drive a Mercedes-Benz ML-Class, worn or damaged lower control arms can cause vague steering, uneven tire wear, and degraded ride comfort. Choosing the right replacement part matters because the control arm directly affects alignment, suspension geometry, and how the vehicle responds to bumps and cornering. This guide shortlists seven top options that meet common vehicle fitment needs and performance goals. We evaluated each option for build quality, bushing type, and fit accuracy, and we highlight signs that indicate a replacement may be necessary.Read on for clear criteria and what to look for when selecting a lower control arm for your Mercedes-Benz ML-Class.
Looking for other parts? See all Mercedes-Benz ML-Class parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | A-Premium Front Lower Control Arm with Bushing for Mercedes-Benz (Front Left & Right) |  |
| Best quality Built to a higher standard if you want something more solid | TRQ Front Left Lower Control Arm with Ball Joint (Driver Side) |  |
| Best Value The sweet spot between price and what you get | DriveFix Front Lower Control Arm Pair with Bushing and Ball Joint for Mercedes-Benz ML/GL/GLE/GLS |  |
| Best Budget The cheapest option that still gets the job done reliably | A-Premium Front Right Lower Control Arm with Bushing for Mercedes-Benz W164/X164 |  |
| Highest Rated A top-rated pick with lots of positive feedback | Detroit Axle Front Right Lower Control Arm Assembly (Passenger Side) |  |
| Most Popular A crowd favorite that many people choose with confidence | TRQ Front Lower Control Arm Set for Mercedes‑Benz ML/GL Series (front lower, pair) |  |
| Best Seller A high-volume bestseller chosen again and again | A-Premium Front Lower Forward Control Arm Assembly with Ball Joint (Set of 4) |  |
1. A-Premium Front Lower Control Arm with Bushing for Mercedes-Benz (Front Left & Right)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front Lower |
| Material Type | Aluminum |
| Control Arm Bushing Included | Yes |
This A-Premium front lower control arm is a vehicle-specific replacement designed for select Mercedes-Benz ML, GL, GLE, and GLS models from roughly 2012 to 2018. It installs at the front lower position on left and right sides and is intended to resolve common symptoms such as clunking, steering wander, uneven tire wear, and vibration. The arm is made from aluminum and ships with the control arm bushing installed, which simplifies installation compared with sourcing separate bushings. It does not include the ball joint and is not pre-greased, so expect to reuse or purchase a separate ball joint if needed and to perform any lubrication during installation. Fitment is OEM-replacement style and several reviewers found it fits without alignment issues. Practical benefits include restored steering feel and reduced suspension noise when properly installed, but durability depends on bushing and rubber quality over time. This part is best for owners doing a targeted suspension repair who want a direct-fit factory-style replacement for the specified Mercedes models.
Best for: Balanced buyers seeking a factory-style, direct-fit replacement to restore steering feel and stop suspension noises on their Mercedes ML-Class and related models.
Less Ideal for: Buyers wanting a complete plug-and-play assembly with ball joints included or those prioritizing a lifetime performance warranty should consider alternative options.
- Vehicle-specific design for direct-fit replacement on supported Mercedes models
- Aluminum construction reduces corrosion compared with steel arms
- Includes control arm bushing which simplifies installation
- Designed to address common suspension symptoms like clunks and uneven tire wear
- Ball joint is not included so additional parts may be required for a complete repair
- Not pre-greased which adds a step during installation and may affect initial noise
Verdict: A vehicle-specific aluminum front lower control arm that provides a factory-style replacement and includes bushings to help restore steering and suspension performance.
2. TRQ Front Left Lower Control Arm with Ball Joint (Driver Side)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Included Components | 1 Lower Ball Joint, 1 Lower Control Arm |
| Manufacturer | TRQ |
| Manufacturer Part Number | PSA73738 |
This TRQ front left lower control arm ships as a two-piece kit with the ball joint pre-assembled and is intended as a direct-fit replacement for Mercedes‑Benz ML-Class and related models. It installs in the front driver side lower position and replaces the factory unit without modification, which makes it suitable for DIY swaps or professional shops performing front-end repairs. Notable features include factory-style mounting points, a pre-installed ball joint to save installation time, and TRQ’s catalog of fitment videos to guide the process. In real-world use the part tightens steering feel and restores suspension geometry after worn components, and reviewers report straightforward alignment after installation. Limitations to consider are mixed long-term durability reports and occasional hardware fit nuances that can require reusing original fasteners; expect to verify cotter-pin and nut fit during reassembly. For ML-Class owners wanting a performance-oriented, factory-quality replacement that restores handling without upgrades, this offers a practical balance of fit and convenience.
Best for: Performance-oriented buyers who prioritize restoring tight steering and factory handling on their Mercedes ML-Class and want a direct-fit, ready-to-install replacement without major modifications.
Less Ideal for: Buyers seeking heavy-duty upgraded suspension components for track or off-road use should consider performance-tuned alternatives instead of a direct factory-replacement arm.
- Vehicle-specific design for direct fit to compatible Mercedes front driver lower location
- Pre-installed ball joint reduces installation time and eliminates separate press-fit steps
- Factory-style mounting points allow straightforward alignment and reuse of existing mounting geometry
- Comes from a brand that provides installation videos and compatibility guidance
- Some users report variable long-term durability compared with factory parts
- Occasional mismatch with supplied hardware requiring reuse of original nuts or bolts
Verdict: A convenient, vehicle-specific replacement that restores ML-Class front-end feel with pre-installed ball joint hardware, though long-term durability can vary.
3. DriveFix Front Lower Control Arm Pair with Bushing and Ball Joint for Mercedes-Benz ML/GL/GLE/GLS
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front |
| Included Components | 2x Suspension Control Trailing Arm |
| Manufacturer Warranty Description | 12 months |
This DriveFix kit supplies both left and right front lower control arms with pressed-in bushings and ball joints to restore steering geometry and suspension control on affected Mercedes-Benz SUVs. It is a direct fit, vehicle-specific replacement for worn or damaged trailing arms and is typically used during front suspension repairs or when addressing clunking, uneven tire wear, or poor alignment. The kit replaces factory part numbers 1663300107 and 1663300207 and comes as two arms so both sides can be renewed together. Practical benefits include returning proper wheel tracking and ride stability without needing separate sourcing for bushings or ball joints. Expect installation to follow standard suspension removal and alignment procedures; an alignment after fitting is required. Limitations are that this is an aftermarket replacement so finish, corrosion protection, and long-term durability may differ from factory parts and fitment should be confirmed for the exact model year before purchase.
Best for: Practical optimizers who want a complete, one-purchase suspension repair that restores handling and lets them avoid sourcing multiple separate parts.
Less Ideal for: Buyers seeking an exact factory-spec replacement with original manufacturer finish and long-term corrosion warranty should consider factory-quality parts instead.
- Sold as a left and right pair so both sides can be replaced at once
- Includes integrated bushings and ball joints eliminating need to buy separate components
- Vehicle-specific fit for Mercedes ML, GL, GLE, and GLS model ranges listed
- Replaces known Mercedes part numbers 1663300107 and 1663300207
- Aftermarket construction may not match factory corrosion protection or longevity
- Fitment varies by year and model so verification before purchase is necessary
Verdict: A complete, vehicle-specific pair of front lower control arms with bushings and ball joints that lets you renew front suspension function in one purchase.
4. A-Premium Front Right Lower Control Arm with Bushing for Mercedes-Benz W164/X164
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front Right Lower |
| Auto Part Orientation | Passengers Side |
| Material Type | Alloy Steel |
This A-Premium front right lower control arm is a direct-fit replacement designed for W164 ML and X164 GL Mercedes-Benz models and installs at the front lower passenger side to restore suspension geometry. It arrives as a new steel control arm with the rubber bushing included but without a ball joint, so it is typically used when the arm or bushing has worn and is causing clunks, steering wander, or uneven tire wear. The vehicle-specific fitment and included accessories simplify swapping a bad arm for a factory-style unit, and the alloy steel construction should provide adequate strength for street use. It does not come pre-greased and does not include a ball joint, so expect a small additional step if your repair requires that component or lubrication. The product carries a one-year parts guarantee that covers the cost of the item only. For budget-focused repairs this control arm offers a straightforward, lower-cost path to restore handling, but installers should confirm ball joint needs before beginning the job.
Best for: Budget-conscious owners wanting a lower-cost, vehicle-specific replacement to fix suspension noise, wandering steering, or uneven tire wear and who prioritize affordability over a fully pre-assembled unit.
Less Ideal for: Drivers seeking a fully assembled, maintenance-free control arm with ball joint included or professional shops that prefer pre-greased, ready-to-install OEM-matching assemblies.
- Vehicle-specific fit for W164 ML and X164 GL models simplifies installation
- Includes control arm bushing so one common failure point is addressed
- Alloy steel construction provides durable, street-worthy strength
- Sold as a single, direct replacement for the front right lower position
- Ball joint is not included, so additional parts may be required for a complete repair
- Not pre-greased which may require cleaning and lubrication during installation
Verdict: A cost-conscious, vehicle-specific replacement control arm that addresses worn bushings and restores front lower suspension performance for ML-Class and GL-Class Mercedes-Benz models.
5. Detroit Axle Front Right Lower Control Arm Assembly (Passenger Side)
| Brand Name | Detroit Axle |
|---|---|
| Manufacturer Part Number | K641959 |
| Auto Part Position | Front Right Lower |
| Auto Part Orientation | Passengers Side |
| Fit Type | Vehicle Specific Fit |
This Detroit Axle front right lower lower control arm is a direct-fit replacement intended for vehicle-specific applications as a passenger-side front lower arm assembly. It installs in place of the factory unit to restore suspension geometry and steering stability after wear or bushing failure. Notable features include a ready-to-install assembly and vehicle-specific fit designation that simplifies swap-in replacement without major modification. In practical use it returns a firm, predictable feeling to the front suspension, helping correct pull, uneven tire wear, and excessive play that develops with aging control arms. Reviewers report straightforward bolt-on fit and improved handling after replacement. Limitations to expect are occasional fitment variations on certain model years that may require light trimming or fitting, and the arm comes unfinished so it may need corrosion protection if left bare in salty climates.
Best for: Reliability-focused buyers who prioritize restoring factory handling and steering feel with a direct-replacement suspension part to keep a Mercedes‑Benz ML-Class dependable.
Less Ideal for: Buyers seeking a cosmetically finished part or a performance-upgraded suspension component should consider alternatives tailored for appearance or enhanced handling rather than a factory-style replacement.
- Vehicle-specific fit simplifies installation and reduces need for modifications.
- Supplies a complete lower control arm assembly ready to bolt into the suspension.
- Designed and tested for impact, wear, and fatigue to address durability concerns.
- Commonly reported to restore steering feel and eliminate play when replacing worn units.
- Some buyers reported slight fitment interference on certain years that required minor grinding or adjustment.
- Arrives unfinished and may need paint or coating for long-term corrosion protection.
Verdict: A dependable, vehicle-specific front right lower control arm assembly that restores factory steering feel and suspension stability.
6. TRQ Front Lower Control Arm Set for Mercedes‑Benz ML/GL Series (front lower, pair)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front Lower |
| Material Type | Alloy Steel |
| Included Components | Front driver and passenger lower control arms |
This TRQ front lower control arm set replaces both driver and passenger lower arms on supported Mercedes‑Benz ML and GL vehicles and is supplied as a two-piece kit with preassembled components. Intended as a vehicle-specific, front-lower replacement, the arms are made from alloy steel and arrive painted black to resist corrosion. Typical use is a like-for-like suspension repair to restore steering precision, reduce play, and improve tire wear; many buyers report straightforward alignment and factory-quality fit without modifications. The kit aims to save time by including preinstalled bushings and ball joints where applicable and TRQ provides DIY installation resources. Important limitations: some users have reported intermittent issues with the supplied ball joints on certain applications, so a professional inspection after installation and consideration of higher-end ball joints for heavy-duty use may be prudent. Also this part is specific to the Mercedes ML/GL fitment list and should be matched to the correct model years before ordering.
Best for: Convenience-driven buyers who want a ready-to-install, vehicle-specific replacement that minimizes workshop time and aligns with a do-it-yourself or quick-shop repair approach.
Less Ideal for: Owners seeking premium aftermarket performance parts or those who prefer to replace with upgraded ball joints and bushings as standard should consider alternative kits or separate higher-grade components.
- Vehicle-specific direct-fit design for Mercedes ML and GL front lower arm replacements
- Comes as a two-piece kit covering both driver and passenger sides
- Alloy steel construction with factory-style finish for corrosion resistance
- Includes preassembled components to simplify DIY or shop installation
- Some reviewers reported early ball-joint failures on specific vehicles requiring replacement of the supplied joints
Verdict: A practical, direct-fit two-piece front lower control arm kit that restores factory-style fit and handling on specified Mercedes‑Benz ML and GL models.
7. A-Premium Front Lower Forward Control Arm Assembly with Ball Joint (Set of 4)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front |
| Material Type | Alloy Steel, Aluminum |
| Included Components | Nut |
These front lower forward control arm assemblies replace the factory front lower control arms and include lower ball joints for a direct suspension repair on compatible Mercedes‑Benz ML and GL models. Sold as a set of four pieces (two control arm assemblies and two ball joints per side across the pair), they are intended to address clunking, steering wander, uneven tire wear, and vibration by restoring proper suspension geometry and steering response. Constructed from alloy steel and aluminum with a black and silver finish, the parts match the factory mounting locations for a bolt-in installation when used with the correct vehicle-specific fit. The kit lists multiple reference part numbers to help verify compatibility. Limitations include reliance on correct fitment to the specified model years and the need for professional alignment after installation; buyers should also expect to reuse or replace any additional fasteners or brackets if corroded. The product includes mounting nuts but does not cover labor or additional suspension components that may need replacement during service.
Best for: A risk-averse mainstream buyer seeking a like‑for‑like, vehicle-specific replacement to restore factory handling and quiet operation after front suspension wear.
Less Ideal for: Shoppers looking for performance-upgrade control arms, universal fit parts, or a one-stop kit that includes alignment or additional suspension components should consider other options.
- Vehicle-specific fit for direct replacement on listed ML and GL model years
- Includes lower ball joints with the control arm assemblies for a more complete repair
- Constructed from alloy steel and aluminum for corrosion resistance and structural strength
- Fitment is limited to the specified Mercedes‑Benz ML and GL year ranges so verification is essential
- Does not include labor or alignment service which is required after suspension work
Verdict: A practical, vehicle-specific front lower control arm assembly kit that replaces worn components to restore factory steering and suspension performance.
Choosing the Right Mercedes-Benz ML-Class Lower Control Arm: Key Factors to Consider
Fitment and Mounting Accuracy
Exact fitment is fundamental because the lower control arm must align with factory mounting points to maintain correct suspension geometry. Even small deviations in bushing or ball joint placement can alter camber and toe, causing uneven tire wear or pulling.
When assessing fitment, look for parts with exact OEM-style mounting holes and bolt patterns. Products that specify vehicle year ranges and chassis codes reduce the risk of alignment drift and make installation straightforward. Proper fitment also minimizes the need for additional alignment corrections after installation.
Bushing Type and Durability
Bushings control compliance between the control arm and the chassis, influencing ride comfort and vibration isolation. Softer bushings absorb more road shock but can allow more movement under load, while firmer bushings reduce deflection and sharpen steering feel.
Consider materials such as rubber for comfort or polyurethane for longer life and reduced deflection, depending on your priorities. Durable bushings resist cracking and oil contamination, which helps maintain alignment settings and reduces the frequency of replacements.
Ball Joint Quality
The ball joint connects the control arm to the steering knuckle and bears steering and suspension loads, so its durability directly affects safety and handling. High-quality ball joints offer smooth articulation, tight tolerances, and corrosion-resistant finishes to prevent premature wear.
Inspect specifications for sealed versus serviceable designs and look for protective boots and grease fittings where appropriate. A well-made ball joint helps maintain consistent steering geometry and reduces the chance of noise or sudden failure.
Material and Corrosion Resistance
Control arms are exposed to road salts, moisture, and debris, so the base material and finish determine long-term reliability. Forged or stamped steel and cast aluminum are common choices, each balancing strength, weight, and fatigue resistance.
Protective finishes such as e-coat, powder coat, or zinc plating slow corrosion. Choose materials and coatings that match your local climate and typical driving conditions to extend service life and preserve structural integrity.
Alignment Stability and Geometry Preservation
A replacement control arm must hold alignment settings under load to prevent premature tire wear and maintain predictable handling. Components that maintain tight bushing tolerances and correct ball joint placement preserve factory suspension geometry.
Look for arms designed to minimize elastic movement and for parts that specify OEM-equivalent geometry. Stability under braking, cornering, and over bumps reduces the need for repeated alignments and supports safe vehicle control.
Ease of Installation and Serviceability
Ease of installation affects labor time and whether you can reuse existing hardware or require additional parts. Arms that come with pre-pressed bushings and compatible ball joints reduce install complexity and potential alignment issues.
Consider whether the design allows for straightforward access to mounting bolts and whether serviceable components such as greaseable ball joints are provided. Clear fitment documentation and included hardware can simplify replacement and lower the chance of installation errors.
How We Chose the Best Mercedes-Benz ML-Class Lower Control Arm
We focused on parts that match Mercedes-Benz ML-Class suspension geometry and mounting points to ensure reliable fitment and alignment retention. Primary evaluation criteria included material and construction quality, bushing design and durability, ball joint specification, and factory-compatible mounting patterns. We also considered corrosion resistance and finish for long-term durability, plus available warranty and manufacturer support as indicators of quality.Excluded items included universal or generic control arms that do not explicitly match ML-Class fitment, carry-over parts for other vehicle lines, and components lacking clear specification data. We prioritized components with explicit fitment details, documented bushing types, and ball joint ratings, because those dimensions directly affect handling, steering response, and alignment stability for this vehicle.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common signs that my Mercedes-Benz ML-Class lower control arm needs replacement?
Common signs include uneven tire wear, a noticeable pull to one side while driving, clunking or knocking noises from the suspension over bumps, and vague or loose steering feel. Visual inspection may reveal torn bushing boots or excessive play at the ball joint. If you notice several of these symptoms together, it often indicates the control arm or its components need attention.
Can I replace only the bushings instead of the whole lower control arm?
In some cases bushings can be replaced separately, but the practicality depends on the arm design and condition. Pressing out bushings requires specialized tools and the control arm should be free of bending or corrosion. If the arm shows structural fatigue, worn ball joints, or severe corrosion, full replacement is usually the safer and more reliable option.
How soon should I get an alignment after installing a new lower control arm?
You should plan for a full wheel alignment immediately after installation. Even with parts that claim OEM-equivalent fitment, replacing suspension components changes toe and camber settings. An alignment ensures proper tire contact, prevents uneven wear, and restores predictable steering behavior.
Are there tradeoffs between comfort and handling when choosing bushings?
Yes, softer bushings generally provide better vibration isolation and ride comfort, while firmer bushings reduce deflection and improve steering precision. Your choice should reflect whether you prioritize a smoother ride or sharper handling, and consider road conditions and typical driving style when deciding.
What maintenance can extend the life of a lower control arm?
Regular visual inspections for bushing damage, ball joint boot tears, and corrosion will catch issues early. Keeping underbody areas clean of salt and road grime, and addressing torn protective boots promptly, helps prevent accelerated wear. For serviceable components, periodic lubrication where applicable can also extend service life.
Will a worn lower control arm affect safety?
A worn control arm can reduce steering precision and compromise suspension geometry, which may impair vehicle stability during maneuvers. Excessive play or a failing ball joint increases the risk of sudden changes in wheel alignment under load. Addressing worn components promptly helps maintain predictable handling and safety.
Conclusion
When selecting a lower control arm for a Mercedes-Benz ML-Class, prioritize correct fitment and components that preserve factory suspension geometry. Focus on bushing material, ball joint quality, and corrosion protection because those factors dictate handling, alignment retention, and long-term durability.Balance tradeoffs between comfort and steering feel based on your driving needs, and plan for a post-installation alignment. Regular inspection and addressing worn components early will help maintain safe, predictable performance.
Explore More:
- Check out all Mercedes-Benz ML-Class parts & accessories
- Explore Lower Control Arms Maintenance & Repair Guides
- Explore Suspension & Steering
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