Land Rover Discovery Sport L550 Electric Steering Rack Gear 2.2 FK72-3504-BA

The Land Rover Discovery Sport L550 Electric Steering Rack Gear is an original steering system component, specifically designed to work with the electric power steering in this model. As part of the Steering racks and housing parts group, it ensures precise transmission of steering input to the wheels and stable vehicle handling during daily use. This used OEM component is a sensible choice for professional repairs when you require factory-fitment and predictable vehicle behavior.

Specifications and technical data

• SKU: RHD-LR063973
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR063973
• Substitutable numbers: LR063973, LR140525, FK723504BD, FK72-3504-BD, FK723504BA, FK72-3504-BA
• Category: Gearbox, Rack & Pinion Parts

Application and function in the steering system

The electric steering rack in the Discovery Sport L550 is responsible for converting the rotational movement of the steering wheel into the lateral movement of the tie rods, while simultaneously working with the electric power steering motor. A properly selected and functional component of this type:

• ensures stable lane keeping at higher speeds,
• enables smooth maneuvering during parking,
• works with safety systems, such as lane assist or traction control (if present in the vehicle),
• reduces unwanted play and vibrations on the steering wheel.

Thanks to the design specified by the vehicle manufacturer, the steering rack maintains the correct gear ratio, steering characteristics, and compatibility with factory electronics.

Original origin and replacement numbers

The presented component comes from the Land Rover OE line, which means it complies with factory quality and dimension standards. The steering rack has a dedicated part number and assigned interchangeable numbers, making it easy to verify its compatibility with the specific equipment version of your Discovery Sport L550. This is particularly important in the case of electric power steering systems, where differences in software and configuration can affect the operation of the entire system.

If you are upgrading or repairing the chassis in your car and are considering using used parts, it is worth reading our guide on tuning and repairs using second-hand components: check how to safely use used OEM parts for car modifications.

Condition, verification, and preparation for installation

The steering rack is offered as a used OEM component, which in practice means a favorable combination of price and the preservation of factory design. This type of part, sourced from dismantling, is a good alternative to unreliable aftermarket replacements, especially in the sensitive area of the steering system. Before installation, it is recommended to perform a standard check for leaks, mechanical play, and the condition of electrical connectors to ensure proper cooperation with the vehicle's electronics.

In most cases, installation is plug-and-play relative to the original setup, maintaining factory mounting points and geometry. After replacing the steering rack, it is usually necessary to perform adaptation and calibration in the ECU and set the wheel alignment at a professional workshop.

Benefits of choosing an original electric steering rack

Choosing an original steering rack for the Discovery Sport L550 brings a number of practical advantages:

• Factory fitment – maintaining original handling characteristics, without the risk of incompatibility with power steering and safety systems.
• Consistency with other system components – compatibility with the steering column, tie rods, and vehicle electronics.
• Predictable vehicle behavior – no unexpected changes in steering assist force or reaction to steering wheel input.
• Reasonable repair cost – a used OEM component often proves to be a more durable and cost-effective solution than a cheap aftermarket replacement.

If you are simultaneously diagnosing other elements of the drivetrain or chassis, our material on selecting used components may also be helpful: learn when used OEM parts are a better choice than budget replacements.

Summary

The Land Rover Discovery Sport L550 Electric Steering Rack Gear is a solution intended for drivers who want to restore the proper operation of the steering system while maintaining factory handling parameters. A used, original element from the Steering racks and housing parts group allows for professional repair without compromises in terms of fitment and cooperation with vehicle electronics. It is a conscious choice for servicing a modern SUV, where steering precision and lane stability are crucial for comfort and safety.