OE Quality
60-Day Returns

Moog RK621251 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward
Overview of Moog RK621251 Suspension Control Arm Assembly
The Moog RK621251 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet Caprice and Pontiac G8 vehicles. Designed with durability and precision, this pre-greased control arm assembly helps maintain proper suspension geometry and vehicle handling.
- Pre-greased for immediate use and reduced maintenance
- Includes rubber bushings for vibration dampening
- Forged steel control arm construction for strength and durability
- Press-in ball joint with threaded stud for secure mounting
- Black finish for corrosion resistance
- Mounting hardware included for straightforward installation
- Maximum control arm length of 13.660 inches
Detailed Product Description
The Moog RK621251 suspension control arm and ball joint assembly is specifically designed to fit Chevrolet Caprice and Pontiac G8 models, ensuring compatibility and proper fitment. The control arm is constructed from forged steel, providing a robust and durable foundation to withstand road stresses. It comes pre-greased, eliminating the need for initial lubrication and helping to extend the lifespan of the ball joint. The assembly includes rubber bushings that absorb road vibrations and reduce noise, contributing to a smoother ride. The ball joint features a press-in mounting type with a threaded stud, allowing for secure and reliable attachment to the vehicle’s suspension system. Finished in black, the control arm offers resistance against corrosion and wear. With mounting hardware included, installation is more convenient and efficient.
Common Applications and Problem Solving
- Replaces worn or damaged suspension control arms on Chevrolet Caprice and Pontiac G8
- Addresses issues with loose or noisy ball joints affecting steering and handling
- Corrects suspension misalignment caused by deteriorated bushings
- Improves vehicle stability and ride comfort by restoring proper suspension geometry
- Eliminates vibration and harshness transmitted through the suspension system
Installation Notes and Tips
Before installation, verify compatibility with your Chevrolet Caprice or Pontiac G8 model year. The pre-greased ball joint reduces initial maintenance but periodic inspection is recommended. Use the included mounting hardware to ensure proper fit and torque specifications. Since the ball joint is press-in type with a threaded stud, appropriate tools are necessary for removal and installation. It is advisable to have a professional alignment performed after installation to maintain optimal suspension performance.
Quality Assurance and Warranty
Moog suspension components are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The RK621251 control arm assembly undergoes rigorous quality control testing. While specific warranty details are not provided here, Moog typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or Moog directly for exact warranty terms.
| Brand | Moog |
|---|---|
| Part Number | RK621251 |
| Pre-Greased | Yes |
| Grease Fitting Included | No |
| Bushings Included | Yes |
| Ball Joint Mounting Type | Press in |
| Ball Joint Stud Type | Threaded |
| Control Arm Material | Forged steel |
| Mounting Hardware Included | Yes |
| Adjustable | No |
| Control Arm Color | Black |
| Control Arm Maximum Length | 13.660 |
| Bushing Material | Rubber |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2013 | Chevrolet | Caprice | Front Left Lower Rearward | Suspension Control Arm and Ball Joint Assembly meets OEM standards. |
| 2012 | Chevrolet | Caprice | Front Left Lower Rearward | Suspension Control Arm and Ball Joint Assembly meets OEM standards. |
| 2011 | Chevrolet | Caprice | Front Left Lower Rearward | Suspension Control Arm and Ball Joint Assembly meets OEM standards. |
| 2009 | Pontiac | G8 | Front Left Lower Rearward | Suspension Control Arm and Ball Joint Assembly meets OEM standards. |
| 2008 | Pontiac | G8 | Front Left Lower Rearward | Suspension Control Arm and Ball Joint Assembly meets OEM standards. |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.