Product Details: Update your semi with reactive air conditioning that only operates when directed, with the OTR 12V 6" York Style Heavy Duty Clutch with Expertise Built In™. To create an engagement that activates the air conditioning, this replacement clutch kit works alongside the compressor to connect the drive power from the engine to the AC unit. Designed to increase engine power and fuel economy by removing power to the AC when the mechanism isn't in use. The air conditioning and heating system in heavy duty trucks has a major impact on drivers’ safety and comfort level. Whether you are looking for A/C compressors, condensers, driers, freon, or blower motors, FleetPride has the part you need to make sure your air conditioning and heating are well maintained. Keep your heavy duty fleet operations working as productively and efficiently as possible by finding the right air conditioning and heating part for you. FleetPride is your First Click in Heavy Duty®.