HEATER CONTROL VALVE SOLENOID. If your having issues with lack of heating in the cab then this could very well be the culprit. Suitable for: Range Rover L322. Range Rover L320. Land Rover Discovery 3. Land rover 4. There is two types, this one with a single cylinder and one with two. If your old one looks like this then it will be suitable for your vehicle. Reference Part Number: LR016848
