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    Suspension arms and related components
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    FIRST LINE FIRST LINE FCA6783 Track Control Trailing Suspension Arm

    FIRST LINE FCA6783 Track Control Trailing Suspension Arm

    EAN: 5038068442475
    Product number: FCA6783
    EAN: 5038068442475

    FIRST LINE FCA6783 Track Control Trailing Suspension Arm

    EAN: 5038068442475

    £ 40,79
    In stock
    FIRST LINE FIRST LINE FCA6784 Track Control Trailing Suspension Arm

    FIRST LINE FCA6784 Track Control Trailing Suspension Arm

    EAN: 5038068442611
    Product number: FCA6784
    EAN: 5038068442611

    FIRST LINE FCA6784 Track Control Trailing Suspension Arm

    EAN: 5038068442611

    £ 76,79
    In stock
    FIRST LINE FIRST LINE FCA6785 Track Control Trailing Suspension Arm

    FIRST LINE FCA6785 Track Control Trailing Suspension Arm

    EAN: 5038068442628
    Product number: FCA6785
    EAN: 5038068442628

    FIRST LINE FCA6785 Track Control Trailing Suspension Arm

    EAN: 5038068442628

    £ 76,79
    In stock
    FIRST LINE FIRST LINE FCA6790 Track Control Trailing Suspension Arm

    FIRST LINE FCA6790 Track Control Trailing Suspension Arm

    EAN: 5038068287632
    Product number: FCA6790
    EAN: 5038068287632

    FIRST LINE FCA6790 Track Control Trailing Suspension Arm

    EAN: 5038068287632

    £ 50,39
    In stock
    FIRST LINE FIRST LINE FCA6791 Track Control Trailing Suspension Arm

    FIRST LINE FCA6791 Track Control Trailing Suspension Arm

    EAN: 5038068288752
    Product number: FCA6791
    EAN: 5038068288752

    FIRST LINE FCA6791 Track Control Trailing Suspension Arm

    EAN: 5038068288752

    £ 50,39
    In stock
    FIRST LINE FIRST LINE FCA6792 Track Control Trailing Suspension Arm

    FIRST LINE FCA6792 Track Control Trailing Suspension Arm

    EAN: 5038068225160
    Product number: FCA6792
    EAN: 5038068225160

    FIRST LINE FCA6792 Track Control Trailing Suspension Arm

    EAN: 5038068225160

    £ 28,79
    In stock
    FIRST LINE FIRST LINE FCA6793 Track Control Trailing Suspension Arm

    FIRST LINE FCA6793 Track Control Trailing Suspension Arm

    EAN: 5038068444479
    Product number: FCA6793
    EAN: 5038068444479

    FIRST LINE FCA6793 Track Control Trailing Suspension Arm

    EAN: 5038068444479

    £ 112,79
    In stock
    FIRST LINE FIRST LINE FCA6794 Track Control Trailing Suspension Arm

    FIRST LINE FCA6794 Track Control Trailing Suspension Arm

    EAN: 5038068444486
    Product number: FCA6794
    EAN: 5038068444486

    FIRST LINE FCA6794 Track Control Trailing Suspension Arm

    EAN: 5038068444486

    £ 112,79
    In stock
    FIRST LINE FIRST LINE FCA6795 Track Control Trailing Suspension Arm

    FIRST LINE FCA6795 Track Control Trailing Suspension Arm

    EAN: 5038068444493
    Product number: FCA6795
    EAN: 5038068444493

    FIRST LINE FCA6795 Track Control Trailing Suspension Arm

    EAN: 5038068444493

    £ 109,19
    In stock
    FIRST LINE FIRST LINE FCA6796 Track Control Trailing Suspension Arm

    FIRST LINE FCA6796 Track Control Trailing Suspension Arm

    EAN: 5038068444509
    Product number: FCA6796
    EAN: 5038068444509

    FIRST LINE FCA6796 Track Control Trailing Suspension Arm

    EAN: 5038068444509

    £ 109,19
    In stock
    FIRST LINE FIRST LINE FCA6797 Track Control Trailing Suspension Arm

    FIRST LINE FCA6797 Track Control Trailing Suspension Arm

    EAN: 5038068445063
    Product number: FCA6797
    EAN: 5038068445063

    FIRST LINE FCA6797 Track Control Trailing Suspension Arm

    EAN: 5038068445063

    £ 95,99
    In stock
    FIRST LINE FIRST LINE FCA6801 Track Control Trailing Suspension Arm

    FIRST LINE FCA6801 Track Control Trailing Suspension Arm

    EAN: 5038068445179
    Product number: FCA6801
    EAN: 5038068445179

    FIRST LINE FCA6801 Track Control Trailing Suspension Arm

    EAN: 5038068445179

    £ 80,39
    In stock
    FIRST LINE FIRST LINE FCA6805 Track Control Trailing Suspension Arm

    FIRST LINE FCA6805 Track Control Trailing Suspension Arm

    EAN: 5038068445230
    Product number: FCA6805
    EAN: 5038068445230

    FIRST LINE FCA6805 Track Control Trailing Suspension Arm

    EAN: 5038068445230

    £ 76,79
    In stock
    FIRST LINE FIRST LINE FCA6806 Track Control Trailing Suspension Arm

    FIRST LINE FCA6806 Track Control Trailing Suspension Arm

    EAN: 5038068445247
    Product number: FCA6806
    EAN: 5038068445247

    FIRST LINE FCA6806 Track Control Trailing Suspension Arm

    EAN: 5038068445247

    £ 76,79
    In stock
    FIRST LINE FIRST LINE FCA6807 Track Control Trailing Suspension Arm

    FIRST LINE FCA6807 Track Control Trailing Suspension Arm

    EAN: 5038068445353
    Product number: FCA6807
    EAN: 5038068445353

    FIRST LINE FCA6807 Track Control Trailing Suspension Arm

    EAN: 5038068445353

    £ 56,39
    In stock
    FIRST LINE FIRST LINE FCA6808 Track Control Trailing Suspension Arm

    FIRST LINE FCA6808 Track Control Trailing Suspension Arm

    EAN: 5038068445360
    Product number: FCA6808
    EAN: 5038068445360

    FIRST LINE FCA6808 Track Control Trailing Suspension Arm

    EAN: 5038068445360

    £ 56,39
    In stock
    FIRST LINE FIRST LINE FCA6809 Track Control Trailing Suspension Arm

    FIRST LINE FCA6809 Track Control Trailing Suspension Arm

    EAN: 5038068445377
    Product number: FCA6809
    EAN: 5038068445377

    FIRST LINE FCA6809 Track Control Trailing Suspension Arm

    EAN: 5038068445377

    £ 70,79
    In stock
    FIRST LINE FIRST LINE FCA6810 Track Control Trailing Suspension Arm

    FIRST LINE FCA6810 Track Control Trailing Suspension Arm

    EAN: 5038068445384
    Product number: FCA6810
    EAN: 5038068445384

    FIRST LINE FCA6810 Track Control Trailing Suspension Arm

    EAN: 5038068445384

    £ 70,79
    In stock
    Control Arm

    Control Arm

    Control Arms Explained

    Control arms are essential suspension components linking the wheel hub to the vehicle frame. They control wheel motion, maintain alignment, and contribute to ride comfort and handling. This guide covers common types, how they’re fitted, inspection, symptoms of wear, and best practices for replacement.

    Visual Examples of Control Arms & Links
    Control arm close-up example
    Track control arm between chassis and wheel
    Performance control arm illustration
    Suspension link assembly

    These images show various control arm designs and their role in linking the chassis to the wheel; they illustrate typical shapes and mounting orientations.

    Types of Control Arms

    Lower Control Arm

    Supports the bottom of the wheel hub, often carries most load. Common on MacPherson strut and double wishbone setups.

    Upper Control Arm

    Used in double wishbone suspensions; works with lower arm to locate the wheel vertically and control camber.

    Wishbone / A-Arm

    Triangular-shaped arm providing stable geometry; may be upper or lower. Common in performance and luxury vehicles.

    Trailing Arm

    Mounts longitudinally, controlling fore-and-aft wheel movement; often used in rear suspensions.

    Multi-Link Arm

    Consists of several links working together for refined wheel control and separation of forces—common in advanced rear or front setups.

    How Control Arms Are Fitted

    Control arms are connected between the chassis/subframe and the wheel hub assembly. Key interface components:

    • Bushings: Rubber or synthetic mounts that isolate vibration and allow limited movement while maintaining alignment.
    • Ball Joints: Spherical bearings enabling steering and vertical motion; often integrated into control arms or connected as separate joints.
    • Mounting Bolts: Secured to the chassis and knuckle; torque specifications must be followed to avoid geometry distortion.
    • Alignment Components: Some control arms include adjustment points; replacing them often necessitates a full wheel alignment.
    Installation Notes
    • Always lift and support the vehicle securely before working on suspension.
    • Replace control arms with the suspension in the correct unloaded or specified position to avoid preloading bushings.
    • Torque all fasteners to manufacturer specifications; loose or over-torqued bolts affect geometry and wear.
    • After installation, perform wheel alignment (toe, camber, caster) to restore handling characteristics.
    Inspection & Replacement Criteria

    Regular inspection of control arms should be part of routine suspension maintenance—typically every service interval or when symptoms appear.

    Check for:
    • Worn or cracked bushings allowing excessive movement.
    • Loose, damaged, or seized ball joints.
    • Corrosion or structural damage to the arm.
    • Unusual tire wear patterns indicating alignment drift.
    • Clunking noises over bumps or during acceleration/deceleration.

    When to replace: Replace control arms if bushings or ball joints show significant play, if the arm is bent/damaged, or if alignment cannot be maintained. Best practice is replacing both sides on the same axle for symmetry.

    Common Symptoms of Worn Control Arms
    • Steering wander or poor tracking on straight roads.
    • Uneven tire wear (camber or toe related).
    • Clunking, knocking, or creaking noises during suspension travel or turning.
    • Vibration through the steering wheel at speed.
    • Loose or vague steering feel.
    Consequences of Ignoring Wear

    Failing control arms can lead to compromised handling, accelerated tire wear, and in severe cases, loss of wheel control—posing safety risks.

    Best Practices & Tips
    • Replace control arms in pairs to keep suspension geometry balanced.
    • Inspect adjacent components (tie rods, sway bar links, wheel bearings) when changing control arms.
    • Use quality replacement parts; upgraded variants can extend service life.
    • After installation always perform a wheel alignment and test drive at low speed before regular use.
    ⚠️ Important:
    Incorrect installation or neglecting alignment after control arm replacement can degrade handling and accelerate wear. Always follow vehicle manufacturer torque settings and alignment procedures.
    Control Arms: Foundation of Stable Suspension

    Understanding control arm types, proper fitment, timely inspection, and replacement keeps your vehicle safe, predictable, and comfortable. Regular checks and using quality components prevent breakdowns and extend overall suspension life.

    Use this guide as part of scheduled maintenance and diagnostics for steering and suspension systems.

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