Land Rover Discovery 4 L319 Rear Door Window Regulator Right O/S AH22-27000-AA

Land Rover Discovery 4 L319 Rear Door Window Regulator Right O/S is an original component from the Window regulators and motors group, designed for precise operation of the rear right window. This used OEM component ensures a factory fit, correct window guidance geometry, and stable mechanism operation in demanding operating conditions.

Specifications and technical data

• SKU: AH22-27000-AA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: AH22-27000-AA
• Substitutable numbers: AH22-27000-AA, AH2227000AA, LR013870, LR052109, AH2227000AB, AH22-27000-AB
• Location on the vehicle: Rear, Right
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The rear right window regulator in the Land Rover Discovery 4 L319 is responsible for the controlled raising and lowering of the window in the rear right door. This component works with the vehicle's electrical system and the controls on the driver's and passenger's panels, ensuring:

• smooth window guidance in the tracks,
• appropriate drive force while maintaining overload protection,
• stable operation throughout the full range of motion,
• maintenance of airtightness and proper window pressure against the seals. Thanks to its factory design, the regulator is matched to the door structure, which reduces the risk of incorrect window alignment and unwanted stress in the mechanism.

Construction and fitment for Land Rover Discovery 4 L319

The regulator is designed specifically for the rear right side of the body, taking into account the characteristic door geometry of the Discovery 4 L319. This means that:

• mounting points correspond to the factory installation holes,
• the mechanism works with the original control motor from the Window regulators and motors group,
• the working stroke is adapted to the dimensions of the window and the door frame. Such fitment facilitates installation and allows for the preservation of the original functionality of the window system without the need for modifications or adaptations.

Condition, origin, and benefits of choosing a used part

The offered regulator is a used component, sourced from the dismantling of a Land Rover vehicle. In practice, this means real cost savings while maintaining a construction consistent with the manufacturer's factory standards. For many Discovery 4 L319 users, choosing an original second-hand component is a reasonable alternative to replacements with uncertain parameters. If you want to better understand when purchasing used components is technically justified and economically viable, it is worth reading our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. Although the article focuses on other groups of parts, it discusses universal principles for selecting elements by OEM numbers and approaches to assessing the condition of used components.

Support with selection and integration with the window system

To ensure proper cooperation with the electrical system and window controls in your Discovery 4 L319, it is crucial to match the regulator to the specific equipment version. Verification of compatibility by OEM number, interchangeable numbers, or the SKU designation helps avoid problems with installation and mechanism operation. If necessary, you can also use parameters such as placement on vehicle to ensure that you are choosing the correct element for the rear right side of the body. Information about the manufacturer, such as brand, and the condition of the part help to consciously compare the offer with other solutions available on the secondary market.

Expansion and modernization of the window system in Land Rover

If you are planning a comprehensive repair or modernization of the door and window area in your Land Rover and need other elements from the same group, such as guides, window motors, or complete window mechanisms, check the available parts in the Land Rover Window regulators and motors category.