The LR023964 air suspension compressor pump is an OEM-spec replacement part specifically designed for the 2004–2009 Land Rover Discovery 3 (chassis code L319). Manufactured by Hitachi, this compressor pump is one of the key power units of the Land Rover Discovery 3 electronic air suspension system. Its primary function is to supply compressed air to the four-wheel independent air suspension system, maintaining ride height, adjusting suspension stiffness, and working with the Terrain Response system to ensure off-road capability, comfort, and handling stability across various driving conditions.
The Discovery 3 used two compressor suppliers between 2004–2009: AMK and Hitachi, with Hitachi-type compressors primarily fitted to certain model years and specific market vehicles. This is a brand new single pump unit – the compressor pump body is supplied as a standalone component without the dryer, relay, or mounting bracket. It is suitable for repair scenarios where only the pump body needs replacement, effectively resolving issues such as suspension sagging, abnormal ride height, and suspension fault warnings on the dashboard caused by compressor aging or failure.