HomeSuspension > Suspension, Springs and Related ComponentsMoog RK80556 Suspension Control Arm and Ball Joint Assembly - Front Lower Forward
Part #: RK80556

Moog RK80556 Suspension Control Arm and Ball Joint Assembly - Front Lower Forward

Front Lower Forward
17 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$60.05Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Volkswagen and Audi, Passat, A6 Quattro, A8 Quattro, S6, S8, and S4
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Moog RK80556 Suspension Control Arm and Ball Joint Assembly Overview

The Moog RK80556 suspension control arm and ball joint assembly is engineered for precision and durability, designed specifically for select Audi and Volkswagen models. This pre-greased, forged aluminum control arm ensures reliable suspension performance for vehicles like the Audi A6 Quattro and Volkswagen Passat.

  • Pre-greased for immediate use
  • Includes rubber bushings and mounting hardware
  • Forged aluminum control arm construction in gray finish
  • Press-in ball joint with threaded stud type
  • Compatible with Audi A6 Quattro, A8 Quattro, S4, S6, S8 and Volkswagen Passat

Detailed Product Features and Specifications

The RK80556 control arm assembly features a forged aluminum control arm with a maximum length of 14.33 inches, providing strength and lightweight performance. The assembly comes pre-greased, eliminating the need for initial lubrication, and includes durable rubber bushings to reduce vibration and noise. The ball joint is press-in mounted with a threaded stud, ensuring secure attachment and ease of installation. All necessary mounting hardware is included for a complete replacement solution. The control arm’s gray color offers corrosion resistance and a clean appearance under the vehicle.

Compatible Vehicles and Application

This Moog suspension control arm and ball joint assembly is compatible with the following vehicles:

  • Audi A6 Quattro
  • Audi A8 Quattro
  • Audi S4
  • Audi S6
  • Audi S8
  • Volkswagen Passat

Designed to meet the specific suspension requirements of these models, the RK80556 ensures proper fit and function.

Common Suspension Issues Addressed

  • Worn or damaged control arm bushings causing steering instability
  • Ball joint wear leading to uneven tire wear or clunking noises
  • Corroded or bent control arms affecting alignment and handling
  • Vibration and noise from deteriorated suspension components
  • Loose or missing mounting hardware compromising suspension integrity

Installation Notes and Tips

Installation of the Moog RK80556 control arm assembly requires basic suspension knowledge and tools. Since the part comes pre-greased and includes bushings and mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before removal of the old control arm. Torque all fasteners to manufacturer specifications and verify alignment after installation to maintain proper handling characteristics.

Quality Assurance and Warranty

Moog parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The RK80556 control arm assembly undergoes rigorous quality control to ensure fit and function. While specific warranty details may vary, Moog typically offers a limited warranty covering defects in materials and workmanship for this suspension component.

BrandMoog
Part NumberRK80556
AdjustableNo
Ball Joint Mounting TypePress In
Ball Joint Stud TypeThreaded
Bushing MaterialRubber
Bushings IncludedYes
Control Arm ColorGray
Control Arm MaterialForged Aluminum
Control Arm Maximum Length14.330
Grease Fitting IncludedNo
Mounting Hardware IncludedYes
Pre-GreasedYes

This part fits 17 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005VolkswagenPassatFront Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2004AudiA6 Quattro4.2LV8Front Lower Forwardwith 17 (in) or 18 (in) Wheels; Premium OE Replacement
2004VolkswagenPassatFront Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2003AudiA6 Quattro4.2LV8Front Lower Forwardwith 17 (in) or 18 (in) Wheels; Premium OE Replacement
2003AudiA8 QuattroFront Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2003AudiS6Front Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2003AudiS8Front Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2003VolkswagenPassatFront Lower ForwardFrom Chassis # 3B3072001; Premium OE Replacement
2002AudiA6 Quattro4.2LV8Front Lower Forwardwith 17 (in) or 18 (in) Wheels; Premium OE Replacement
2002AudiA8 QuattroFront Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2002AudiS6Front Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2002AudiS8Front Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2001AudiA6 Quattro4.2LV8Front Lower Forwardwith 17 (in) or 18 (in) Wheels; Premium OE Replacement
2001AudiA8 QuattroFront Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2001AudiS8Front Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2000AudiA8 QuattroFront Lower ForwardSuspension Control Arm and Ball Joint Assembly meets OEM standards.
2000AudiS4Front Lower ForwardTo Chassis # 8DY080000; Premium OE Replacement

* 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:

102-71351098055619932260-565845D34124B3407151A4B3407151C4B3407151K507-1412520-7626223315762333157CB43145CMK80556FA4554FK80556JTC980MK80556TC1343

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