SKP SK521879 Suspension Control Arm and Ball Joint Assembly - Front Left Lower
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SKP SK521879 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Brand SKP SK521879
Position Front Left Lower
Fits Ford and Mercury · 9 vehicles

Direct replacement. Replacement suspension control arm and ball joint assembly for straightforward service.

OE cross-reference. Matches Dorman - OE Solutions 521-879 and MOOG RK621604 applications.

Cross-references Dorman - OE Solutions 521-879, MOOG Chassis Products RK621604 and 5F9Z3079BA for the same application. See all 4.

$127.67Free shipping
In stock · usually ships same day before 1pm CST
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Order total $127.67
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Suspension Control Arm Assembly

The SKP SK521879 is a suspension control arm and ball joint assembly for specific Ford and Mercury applications. It is built for direct replacement use where the original front left lower control arm assembly has worn, loosened, or developed noise.

Key Features

  • Direct replacement suspension control arm and ball joint assembly.
  • Fits front left lower suspension applications.
  • Cross-references Dorman - OE Solutions 521-879 and MOOG Chassis Products RK621604 for the same application.
  • Part number SK521879 for easy identification and ordering.

Fitment Details

Compatible with 2005-2007 Ford Five Hundred, front left lower. Compatible with 2005-2007 Ford Freestyle, front left lower. Compatible with 2005-2007 Mercury Montego, front left lower.

Common Replacement Reasons

  • Clunking or knocking from the suspension.
  • Excessive play in the control arm or ball joint.
  • Uneven tire wear caused by worn suspension geometry.
  • Steering looseness related to front suspension wear.

Installation Notes

Verify fitment by year, make, model, and front left lower position before installation. Inspect related suspension components and alignment settings during replacement. Professional installation and a post-service alignment are recommended after control arm replacement.

Quality Assurance

SKP SK521879 is cataloged as a replacement suspension component for the listed applications. Confirm the part number SK521879 and vehicle fitment details before ordering.

Related reading

This part fits 9 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
2007FordFive HundredAWDFront Left Lower—
2007FordFreestyleAWDFront Left Lower—
2007MercuryMontegoAWDFront Left Lower—
2006FordFive HundredAWDFront Left Lower—
2006FordFreestyleAWDFront Left Lower—
2006MercuryMontegoAWDFront Left Lower—
2005FordFive HundredAWDFront Left Lower—
2005FordFreestyleAWDFront Left Lower—
2005MercuryMontegoAWDFront Left Lower—
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - OE Solutions — 521-879MOOG Chassis Products — RK6216045F9Z3079BA521879