HomeSuspension > Suspension, Springs and Related ComponentsSuspensia X31CJ0730 Suspension Control Arm and Ball Joint Assembly - Front Left Lower
Part #: X31CJ0730

Suspensia X31CJ0730 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower
⚙️ 11 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mercedes-Benz, S550, S560, and S600
🔄Easy Returns — Return within 60 days for a full refund
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Suspensia Suspension Control Arm and Ball Joint Assembly Overview

The Suspensia X31CJ0730 suspension control arm and ball joint assembly is engineered for select Mercedes-Benz models, including the S550, S560, and S600. Crafted from durable aluminum, this assembly offers reliable performance and precise fitment for your vehicle's suspension system.

  • Constructed from lightweight aluminum for strength and corrosion resistance
  • Includes rubber bushings and dust boots in black for enhanced durability
  • Machined ball joint mounting with threaded stud (M16) for secure attachment
  • Composite bearing material designed for consistent operation
  • Locking nut included to ensure proper fastening

Detailed Product Features and Specifications

This suspension control arm and ball joint assembly (part number X31CJ0730) is designed specifically for Mercedes-Benz S550, S560, and S600 models. The aluminum construction provides a balance of strength and weight savings, contributing to improved suspension responsiveness. Black rubber bushings and dust boots protect internal components from contaminants and wear, extending the service life of the assembly. The ball joint features a machined mounting type with a threaded M16 stud, allowing for precise installation and secure fitment. Composite bearing materials are used to maintain smooth articulation under various driving conditions. The assembly includes a locking nut but does not come with a castle nut, cotter pin, or grease fittings, reflecting its regular grade type and maintenance requirements.

Applications and Problem Solving

  • Replaces worn or damaged suspension control arms on Mercedes-Benz S550, S560, and S600
  • Addresses issues such as excessive play or noise in the front suspension
  • Restores proper wheel alignment and handling characteristics
  • Eliminates vibration caused by deteriorated bushings or ball joints
  • Improves overall suspension stability and ride quality

Installation Notes and Tips

When installing the Suspensia X31CJ0730 control arm and ball joint assembly, ensure compatibility with your specific Mercedes-Benz model (S550, S560, or S600). The assembly includes rubber bushings and dust boots pre-installed, but no grease fittings are provided, so no greasing is necessary. Use the included locking nut to secure the ball joint stud, and verify torque specifications according to manufacturer guidelines. Since castle nuts and cotter pins are not included, confirm if your vehicle requires these components separately. Proper alignment after installation is recommended to maintain optimal suspension performance.

Quality Assurance and Warranty

Suspensia manufactures this control arm and ball joint assembly to meet OEM standards for fit and function. The use of aluminum and composite materials ensures durability and resistance to corrosion. While no specific warranty information is provided, Suspensia products typically adhere to industry quality controls to support reliable operation in Mercedes-Benz S550, S560, and S600 vehicles.

BrandSuspensia
Part NumberX31CJ0730
MaterialAluminum
Bushing ColorBlack
Stud Thread SizeM16
Castle Nut IncludedNo
Grease Fitting IncludedNo
Bushings IncludedYes
Dust Boot IncludedYes
Ball Joint Mounting TypeMachined
Ball Joint Stud TypeThreaded
Cotter Pin IncludedNo
Grade TypeRegular
Boot MaterialRubber
Locking Nut IncludedYes
GreaseableNo
Boot ColorBlack
Bearing MaterialComposite
Bushing MaterialRubber
Dust Boot MaterialRubber
9906No

This part fits 11 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2021Mercedes-BenzS560RWDFront Left Lower
2020Mercedes-BenzS560RWDFront Left Lowerwith Active Body Control
2019Mercedes-BenzS560RWDFront Left Lowerwith Active Body Control
2018Mercedes-BenzS560RWDFront Left Lowerwith Active Body Control
2017Mercedes-BenzS550RWDFront Left Lowerwith Active Body Control
2017Mercedes-BenzS600RWDFront Left Lowerwith Active Body Control
2016Mercedes-BenzS550RWDFront Left Lowerwith Active Body Control
2016Mercedes-BenzS600RWDFront Left Lowerwith Active Body Control
2015Mercedes-BenzS550RWDFront Left Lowerwith Active Body Control
2015Mercedes-BenzS600RWDFront Left Lowerwith Active Body Control
2014Mercedes-BenzS550RWDFront Left Lowerwith Active Body Control

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2223305701526279CB27153

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.