OE Quality
60-Day Returns

Dorman 521-127 Suspension Control Arm and Ball Joint Assembly - Front Left Lower
Reliable Suspension Control Arm and Ball Joint Assembly for Scion xA and xB
The Dorman 521-127 suspension control arm and ball joint assembly is designed specifically for Scion xA and xB models. This pre-greased, steel control arm assembly offers a durable and maintenance-friendly solution for light suspension needs.
- Pre-greased for immediate use and reduced maintenance
- Includes rubber bushings and mounting hardware for a complete installation
- Steel construction with casting/forged control arm type for strength and durability
- Press-in ball joint with threaded stud for secure mounting
- Compatible with Scion xA and xB suspension systems
Durable Design and Key Features
The Dorman 521-127 control arm and ball joint assembly features a black steel control arm with a maximum width of 288.5 mm and length of 237 mm, engineered to meet regular suspension grade requirements. The assembly includes rubber bushings that help absorb road vibrations and reduce noise, enhancing ride comfort. The ball joint is installed and ready to use, featuring a 14 mm threaded stud and a 12.3 mm mounting hole diameter for precise fitment. This assembly is designed for light suspension grade applications and comes with all necessary mounting hardware, ensuring a straightforward replacement process.
Compatible Vehicles and Applications
This suspension control arm and ball joint assembly is compatible with the following Scion models:
- Scion xA
- Scion xB
It is ideal for addressing common suspension issues such as worn bushings, ball joint play, and control arm damage, helping restore proper steering and handling performance.
Common Suspension Issues Addressed
- Excessive play or looseness in the ball joint
- Worn or cracked rubber bushings causing noise or vibration
- Damaged or bent control arm affecting wheel alignment
- Uneven tire wear due to suspension component failure
- Reduced steering responsiveness and vehicle stability
Installation Notes and Tips
The Dorman 521-127 assembly comes pre-greased and includes mounting hardware, simplifying installation. It is not adjustable, so ensure proper alignment after installation. Use appropriate tools to press in the ball joint if removal or replacement is necessary. Verify torque specifications for mounting bolts to maintain safety and performance standards.
Quality Assurance and Warranty
Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-127 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.
| Brand | Dorman |
|---|---|
| Part Number | 521-127 |
| Adjustable | No |
| Ball Joint Included | Yes |
| Ball Joint Installed | Yes |
| Ball Joint Mounting Type | Press In |
| Ball Joint Stud Type | Threaded |
| Ball Joint Thread Diameter | 14 |
| Bushing Material | Rubber |
| Bushings Included | Yes |
| Control Arm Color | Black |
| Control Arm Material | Steel |
| Control Arm Maximum Length | 237 |
| Control Arm Maximum Width | 288.5 |
| Control Arm Type | Casting/Forged |
| Grade Type | Regular |
| Grease Fitting Included | No |
| Mounting Hardware Included | Yes |
| Mounting Hole Diameter | 12.3 mm |
| Mounting Hole Quantity | 1 |
| Package Contents | Control Arm and Ball Joint Assembly |
| Pre-Greased | Yes |
| Suspension Grade Type | Light |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Scion | xA | Front Left Lower | |
| 2006 | Scion | xB | Front Left Lower | |
| 2005 | Scion | xA | Front Left Lower | |
| 2005 | Scion | xB | Front Left Lower | |
| 2004 | Scion | xA | Front Left Lower | From 5/03 |
| 2004 | Scion | xB | Front Left Lower | From 5/03 |
* 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.