Check the listing for details. Heater Valve Kit Electronic Servo Controlled [50-1555]. Condition: New. Listed at 125.00 USD. Old Air Products' Electronically Controlled Heater Valve Kit [50-1555]Heater valve fits 5/8" heater hose, with sleeve adapters for 3/4" heater hose applications. Requires 12 volts.Features:- Variable control of coolant to finely adjust temperature- Special design diverts coolant directly to the engine, away from heater core, when in the off position to reduce excess heat inside the vehicle Includes:- Electronic Bypass Heater Valve w/ Servo Motor- Wire Harness- Rotary Control Switch Made in the USA!Old Air Products has been in business since 1989. We strive to provide quality parts and unsurpassed customer service. Our company specializes in complete aftermarket A/C and Heater Systems and Factory Replacement A/C & Heater Parts for Antique, Classic, and Custom Vehicles. We have many NOS & NORS parts in stock including Heater Valves, Receiver/Driers, Cables, update kits for STV & POA Valves, A/C Hose Assemblies, Vacuum Valves and Electrical Switches. If you have any questions about this item please contact our sales/technical support department or for our other A/C & Heater systems and parts available for antique and classic vehicles.