The window regulator assembly is the mechanical component responsible for raising and lowering the door glass on manual window systems in the Land Rover Defender. This right-hand unit uses a scissor or cable-driven mechanism that, when worn, causes the window to become stiff, drop unevenly, or fail to hold position. Correct replacement restores smooth, reliable window operation and prevents glass damage caused by an unbalanced or binding mechanism. Key Features Right-hand fitment - designed specifically for the driver's side door on right-hand drive configurations Manual operation - compatible with non-powered window systems only; not suitable for electric window conversions OEM specification part matching Land Rover part number CUH000101 When replacing the regulator, inspect the door glass channel seals and winder handle mechanism for wear and replace simultaneously if necessary Vehicle Fitment Fits Land Rover Defender (1986–2006) with manual windows from chassis number 2A622424, and Defender (2007 onwards) with manual windows, right-hand side. Not sure about fitment? Feel free to get in touch at [email protected]