The 92-99 Mercedes-Benz W140-S320, S420, S500. Heater Control Valve is a genuine part made by Mercedes-Benz in Germany. Specifically designed for the W140 model, this OE/OEM part number 0018301484 ensures a perfect fit and reliable performance for controlling the heating system in your vehicle. Trust in the quality and craftsmanship of Mercedes-Benz parts to keep your car running smoothly and efficiently. This part has been rebuilt with new seals and plungers. Has been cleaned, primer and painted. All hoses and clamps were cleaned in ultrasonic cleaner and are included.