Land Rover Discovery 4 Rear Door Window Regulator Motor Left N/S AH22-27000-AA

Land Rover Discovery 4 Rear Left Window Regulator AH22-27000-AA is an original part from the window regulators and motors category, designed for the rear left window of the Discovery 4 body. The used window regulator ensures proper operation of the window lowering and raising mechanism, restoring full functionality to the rear door and improving the comfort of daily use.

Specifications and technical data

• SKU: LR013870
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR013870
• Substitutable numbers: LR013870, AH2227000AA, AH22-27000-AA
• Location on the vehicle: Rear, Left
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Vehicle Application and Placement

The presented window regulator is dedicated for installation in the rear left door of the vehicle. It is responsible for stable window guidance and transferring power from the motor to the lifting mechanism. Thanks to its precise fit to the Discovery 4 door structure, the element cooperates with factory mounting points and the original electrical system.

Its placement on the vehicle is clearly defined as the rear axle, left side, which facilitates part selection when replacing a damaged or worn mechanism.

Technical and Functional Characteristics

The regulator belongs to the group of components responsible for precise side window operation. The mechanism's design is intended for:

• stable window guidance in the tracks,
• proper transfer of torque from the motor,
• maintaining correct operating geometry throughout the entire range of motion,
• cooperation with the original window control system in the Discovery 4.

Proper fit to the rear left door reduces the risk of stress, jamming, and excessive wear of cooperating elements, such as window tracks or seals.

Benefits of Using an Original Regulator

Using an original window regulator in the Discovery 4 allows for maintaining the operating parameters intended by the vehicle manufacturer. In practice, this means:

• correct window raising and lowering speed,
• reduced load on the electrical system and comfort controllers,
• better fit with the door structure and upholstery,
• reduction of noise and vibrations during mechanism operation.

A used part with retained functionality offers a reasonable compromise between repair cost and maintaining the vehicle's proper operational parameters.

Part Selection by OEM and Reference Numbers

The window regulator is one of those components where OEM and reference number compatibility is crucial for correct installation. When selecting a part, it is advisable to use the vehicle manufacturer's designations and interchangeable numbers to avoid compatibility issues, such as differences in mountings, cable lengths, or electrical connector types.

If you are interested in a broader context of using used components in repairs, including principles of selection by OEM and VIN numbers, practical cost examples, and a discussion of common myths, check out the expert guide: Why Buy Used Gearboxes and Engines – Facts Instead of Myths.

Land Rover Window Regulators and Motors – Related Offer

If you are also looking for other Land Rover window regulators and motors – for example, for other doors or different models of this brand – check out the full, dedicated offer in the Land Rover Window Regulators and Motors category to select parts that match your specific car version.