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    Suspension arms and related components
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    FIRST LINE FIRST LINE FCA6830 Track Control Trailing Suspension Arm

    FIRST LINE FCA6830 Track Control Trailing Suspension Arm

    EAN: 5038068240798
    Product number: FCA6830
    EAN: 5038068240798

    FIRST LINE FCA6830 Track Control Trailing Suspension Arm

    EAN: 5038068240798

    £ 58,79
    In stock
    FIRST LINE FIRST LINE FCA6831 Track Control Trailing Suspension Arm

    FIRST LINE FCA6831 Track Control Trailing Suspension Arm

    EAN: 5038068240903
    Product number: FCA6831
    EAN: 5038068240903

    FIRST LINE FCA6831 Track Control Trailing Suspension Arm

    EAN: 5038068240903

    £ 50,39
    In stock
    FIRST LINE FIRST LINE FCA6834 Track Control Trailing Suspension Arm

    FIRST LINE FCA6834 Track Control Trailing Suspension Arm

    EAN: 5038068250681
    Product number: FCA6834
    EAN: 5038068250681

    FIRST LINE FCA6834 Track Control Trailing Suspension Arm

    EAN: 5038068250681

    £ 80,39
    In stock
    FIRST LINE FIRST LINE FCA6835 Track Control Trailing Suspension Arm

    FIRST LINE FCA6835 Track Control Trailing Suspension Arm

    EAN: 5038068250704
    Product number: FCA6835
    EAN: 5038068250704

    FIRST LINE FCA6835 Track Control Trailing Suspension Arm

    EAN: 5038068250704

    £ 39,59
    In stock
    FIRST LINE FIRST LINE FCA6836 Track Control Trailing Suspension Arm

    FIRST LINE FCA6836 Track Control Trailing Suspension Arm

    EAN: 5038068250711
    Product number: FCA6836
    EAN: 5038068250711

    FIRST LINE FCA6836 Track Control Trailing Suspension Arm

    EAN: 5038068250711

    £ 39,59
    In stock
    FIRST LINE FIRST LINE FCA6837 Track Control Trailing Suspension Arm

    FIRST LINE FCA6837 Track Control Trailing Suspension Arm

    EAN: 5038068250858
    Product number: FCA6837
    EAN: 5038068250858

    FIRST LINE FCA6837 Track Control Trailing Suspension Arm

    EAN: 5038068250858

    £ 47,99
    In stock
    FIRST LINE FIRST LINE FCA6838 Track Control Trailing Suspension Arm

    FIRST LINE FCA6838 Track Control Trailing Suspension Arm

    EAN: 5038068250865
    Product number: FCA6838
    EAN: 5038068250865

    FIRST LINE FCA6838 Track Control Trailing Suspension Arm

    EAN: 5038068250865

    £ 47,99
    In stock
    FIRST LINE FIRST LINE FCA6839 Track Control Trailing Suspension Arm

    FIRST LINE FCA6839 Track Control Trailing Suspension Arm

    EAN: 5038068251282
    Product number: FCA6839
    EAN: 5038068251282

    FIRST LINE FCA6839 Track Control Trailing Suspension Arm

    EAN: 5038068251282

    £ 53,99
    In stock
    FIRST LINE FIRST LINE FCA6840 Track Control Trailing Suspension Arm

    FIRST LINE FCA6840 Track Control Trailing Suspension Arm

    EAN: 5038068251299
    Product number: FCA6840
    EAN: 5038068251299

    FIRST LINE FCA6840 Track Control Trailing Suspension Arm

    EAN: 5038068251299

    £ 53,99
    In stock
    FIRST LINE FIRST LINE FCA6841 Track Control Trailing Suspension Arm

    FIRST LINE FCA6841 Track Control Trailing Suspension Arm

    EAN: 5038068251343
    Product number: FCA6841
    EAN: 5038068251343

    FIRST LINE FCA6841 Track Control Trailing Suspension Arm

    EAN: 5038068251343

    £ 53,99
    In stock
    FIRST LINE FIRST LINE FCA6842 Track Control Trailing Suspension Arm

    FIRST LINE FCA6842 Track Control Trailing Suspension Arm

    EAN: 5038068251350
    Product number: FCA6842
    EAN: 5038068251350

    FIRST LINE FCA6842 Track Control Trailing Suspension Arm

    EAN: 5038068251350

    £ 53,99
    In stock
    FIRST LINE FIRST LINE FCA6843 Track Control Trailing Suspension Arm

    FIRST LINE FCA6843 Track Control Trailing Suspension Arm

    EAN: 5038068251466
    Product number: FCA6843
    EAN: 5038068251466

    FIRST LINE FCA6843 Track Control Trailing Suspension Arm

    EAN: 5038068251466

    £ 79,19
    In stock
    FIRST LINE FIRST LINE FCA6844 Track Control Trailing Suspension Arm

    FIRST LINE FCA6844 Track Control Trailing Suspension Arm

    EAN: 5038068251473
    Product number: FCA6844
    EAN: 5038068251473

    FIRST LINE FCA6844 Track Control Trailing Suspension Arm

    EAN: 5038068251473

    £ 79,19
    In stock
    FIRST LINE FIRST LINE FCA6855 Track Control Trailing Suspension Arm

    FIRST LINE FCA6855 Track Control Trailing Suspension Arm

    EAN: 5038068251602
    Product number: FCA6855
    EAN: 5038068251602

    FIRST LINE FCA6855 Track Control Trailing Suspension Arm

    EAN: 5038068251602

    £ 50,39
    In stock
    FIRST LINE FIRST LINE FCA6856 Track Control Trailing Suspension Arm

    FIRST LINE FCA6856 Track Control Trailing Suspension Arm

    EAN: 5038068251619
    Product number: FCA6856
    EAN: 5038068251619

    FIRST LINE FCA6856 Track Control Trailing Suspension Arm

    EAN: 5038068251619

    £ 50,39
    In stock
    FIRST LINE FIRST LINE FCA6857 Track Control Trailing Suspension Arm

    FIRST LINE FCA6857 Track Control Trailing Suspension Arm

    EAN: 5038068251633
    Product number: FCA6857
    EAN: 5038068251633

    FIRST LINE FCA6857 Track Control Trailing Suspension Arm

    EAN: 5038068251633

    £ 88,79
    In stock
    FIRST LINE FIRST LINE FCA6858 Track Control Trailing Suspension Arm

    FIRST LINE FCA6858 Track Control Trailing Suspension Arm

    EAN: 5038068251756
    Product number: FCA6858
    EAN: 5038068251756

    FIRST LINE FCA6858 Track Control Trailing Suspension Arm

    EAN: 5038068251756

    £ 75,59
    In stock
    FIRST LINE FIRST LINE FCA6859 Track Control Trailing Suspension Arm

    FIRST LINE FCA6859 Track Control Trailing Suspension Arm

    EAN: 5038068251763
    Product number: FCA6859
    EAN: 5038068251763

    FIRST LINE FCA6859 Track Control Trailing Suspension Arm

    EAN: 5038068251763

    £ 75,59
    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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