Dorman 521-750 | Suspension Control Arm and Ball Joint Assembly

Part Number
Suspension Control Arm

Fits: 04-10 Audi A8 Quattro, 04-06 Volkswagen Phaeton, 07-09 Audi S8

Special Price $102.59 Regular Price $113.99
In stock
Only 7 left
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Estimated Ship Date: 1 Business Day or Less

This suspension control arm and ball joint assembly is a direct replacement for the original equipment on specific vehicle applications. An industry-leading evaluation process ensures a smooth ride, directional stability and predictable dynamics.

BRAND: Dorman - OE Solutions


  • Audi A8 Quattro 2010-04, Audi S8 2009-07, Volkswagen Phaeton 2006-04
  • Trustworthy replacement - this control arm and ball joint assembly directly replaces the original assembly on specific vehicle applications
  • Quality engineering - underwent industry-leading testing to ensure a smooth, stable and safe ride
  • Suspension Control Arm
  • Durably designed - additional coatings offer long-lasting rust and corrosion resistance
  • Complete repair - each assembly includes pre-installed ball joint and bushings, saving time and labor
  • Suspension, Control, Arm, Ball, Joint, Assembly, Arms, Assemblies


Ball Joint IncludedYes
Ball Joint InstalledYes
Ball Joint Mounting TypePress In
Ball Joint Stud TypeThreaded
Ball Joint Thread Diameter14
Bushing MaterialRubber
Bushings IncludedYes
Control Arm ColorBlack
Control Arm MaterialAluminum
Control Arm Maximum Length237
Control Arm Maximum Width288.5
Control Arm TypeCasting/Forged
Grade TypeRegular
Grease Fitting IncludedNo
Mounting Hardware IncludedYes
Mounting Hole Diameter12.3
Mounting Hole Quantity1
Package ContentsControl Arm and Ball Joint Assembly
Suspension Grade TypeLight



  • DELPHI: TC1969
  • Napa Premium: 2606370
  • TRW: JTC1040
  • Mevotech Original Grade: GS70135
  • Volkswagen: 4E0407694R
  • Beck/Arnley: 102-5979
  • Precision Driveline: CB70059
  • Mevotech Supreme: CMS70135
  • MOOG: RK620455


  • 2004-2006 Volkswagen Phaeton - Position: Front Right Lower Rearward
  • 2004-2010 Audi A8 Quattro - Position: Front Right Lower Rearward
  • 2007-2009 Audi S8 - Position: Front Right Lower Rearward
Customer Questions
How do suspension stabilizer bars work?
Suspension stabilizer bars, or sway bars, reduce body roll during turns by connecting the suspension on opposite sides of the vehicle and distributing the force of the turn more evenly between the wheels.
Do stabilizer bars affect steering?
Yes, stabilizer bars can affect steering by reducing body roll during turns and improving handling and stability.
Where is the stabilizer bar link?
The stabilizer bar link is a small metal rod with ball joints that connects the stabilizer bar to the suspension system of a vehicle. It is typically located near the wheels and attaches to the control arm or strut of the suspension.
What is the suspension stabilizer bar link?
The suspension stabilizer bar link is a component that connects the suspension stabilizer bar to the suspension system of a vehicle, allowing the stabilizer bar to effectively reduce body roll during turns and improve the handling and stability of the vehicle. It is typically a small metal rod with ball joints on each end.
Can I use Dorman parts to replace OEM parts?
Yes, Dorman parts can often be used as replacements for OEM parts, but it is important to carefully compare specifications and ensure compatibility.
How do I install Dorman shift linkage bushing?
To install a Dorman shift linkage bushing, first locate the old bushing and remove it if necessary. Apply lubricant to the Dorman bushing and slide it onto the shift linkage, tapping it into place with a soft tool until fully seated. Check the alignment and function of the shift linkage after installation.
Where is Dorman manufactured?
Dorman is a global automotive parts supplier with manufacturing facilities in the United States, Mexico, Canada, China, and India. Its headquarters and largest manufacturing facility are located in Colmar, Pennsylvania, USA.
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