HomeSuspension > Suspension, Springs and Related ComponentsDorman 521-127 Suspension Control Arm and Ball Joint Assembly - Front Left Lower
Part #: 521-127

Dorman 521-127 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower
6 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Scion, xA and xB
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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.

BrandDorman
Part Number521-127
AdjustableNo
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 MaterialSteel
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 mm
Mounting Hole Quantity1
Package ContentsControl Arm and Ball Joint Assembly
Pre-GreasedYes
Suspension Grade TypeLight

This part fits 6 vehicles. Search below:

YearMakeModelPositionNotes
2006ScionxAFront Left Lower
2006ScionxBFront Left Lower
2005ScionxAFront Left Lower
2005ScionxBFront Left Lower
2004ScionxAFront Left LowerFrom 5/03
2004ScionxBFront Left LowerFrom 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:

101-6579260618348069590654CB86064CA733BCK620270CMS86124FA3184GS86124JTC1827TC5169

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