Check the listing for details. Bypass Heater Valve, cable operated, pull to open #25-1018. Condition: New. Listed at 52.50 USD. Visit My eBay Store: Old Air Products Bypass Heater Valve, Cable Operated, Pull to open [25-1018]Bypass heater valves return the water to the engine. Allow for complete control of coolant flow to regulate heater temperature and completely bypass the flow of coolant thru the heater core to maximize the A/C system performance. The non-corrosive valve is easy to install and fits all vehicles with 5/8" heater hose and includes an adapter sleeve for use with 3/4" heater hose. (Cable sold separately)Our valves offer the quality, reliability, and durability of OE. 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.