Seat Leon 1P Altea 5P Front Lower Control Arm Wishbone Left N/S 1K0407151BD

Seat Leon 1P Altea 5P Front Lower Control Arm Wishbone Left N/S is a component from the Control arms and ball joints group, designed for precise wheel guidance and suspension geometry stabilization. This original used Seat part ensures a factory-fit to the front suspension structure and allows for a technically correct repair without interfering with the manufacturer's design.

Specifications and technical data

• SKU: 1K0407151BD
• Mark: Seat
• Condition: Used
• OEM Part Number: 1K0407151BD
• Substitutable numbers: 1K0407151BD, 1K0 407 151 BD
• Location on the vehicle: Front, Left
• Category: Control Arms, Ball Joints & Assemblies

Application and function in the suspension

The presented control arm operates in the front suspension on the left side, responsible for maintaining the correct position of the wheel hub relative to the body. Thanks to the properly selected geometry of the arm and its cooperation with the ball joint and metal-rubber bushings, this component:

• stabilizes the wheel during acceleration, braking, and driving over uneven surfaces,
• limits unwanted changes in wheel toe and camber,
• supports even tire wear,
• influences the predictable behavior of the car in corners.

For Seat Leon 1P and Altea 5P models, a correctly selected left front control arm is crucial for maintaining factory handling parameters and driving comfort.

Benefits of using an original control arm

Using an original control arm from this series allows for maintaining compliance with the manufacturer's design assumptions. This means, among other things:

• factory mounting points – no need for modifications during installation,
• properly selected arm stiffness,
• compatibility with standard suspension and steering system components,
• consistent operation with other control arms and the stabilizer bar.

For the user, this translates into predictable car reactions, correct operation of safety systems, and easier geometry adjustment after replacement.

Condition, verification, and preparation for installation

The component comes from disassembly and is offered as a used part, which allows for an economical repair while maintaining the original specification. Before sale, the control arm is visually verified for cracks, excessive deformation, and structural damage to the arm. It is recommended that during installation:

• check the condition of the cooperating bushings and ball joint,
• use new bolts and nuts in accordance with the manufacturer's recommendations,
• perform a front axle geometry adjustment after completing the work.

Such an approach allows for fully utilizing the potential of the part and reducing the risk of accelerated tire wear or unstable handling.

Selection, numbers, and vehicle compatibility

The control arm is assigned to a specific manufacturer reference and has interchangeable numbers, which facilitates unambiguous identification in parts catalogs. When selecting, it is worth paying attention to:

• compatibility with the body version and model generation,
• placement on the vehicle (front, left side),
• type of suspension used in the given car version.

If you want to deepen your knowledge about suspension operation and the role of control arms in driving safety, the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizer bars, which discusses practical aspects of operation and diagnostics of these components, will be helpful.

Additionally, when selecting parts by OEM number or based on vehicle data, it is worth using the practical tips contained in the guide how to choose the right car part by VIN and OEM number, which will help avoid mistakes and speed up the ordering process.

Complementary Seat suspension components

If you are planning a comprehensive repair or upgrade of the front suspension zone in your Seat and need other components from the same group, such as additional control arms, ball joints, or related steering components, check the available parts in the Seat control arms and ball joints category.

Summary

Seat Leon 1P Altea 5P Front Lower Control Arm Wishbone Left N/S is a reasonable choice for drivers who want to restore correct suspension operation while maintaining the original handling characteristics. A used part from the Control arms and ball joints group allows for a technically correct repair, ensuring proper wheel guidance, vehicle stability, and predictable behavior on the road.