The Airsource TM-21 Series 12V A/C Compressor is the perfect choice and is designed to provide reliable and efficient cooling for bus applications. It features a serpentine belt type connection that allows for a secure and reliable connection. The direct mount type and male insert O-ring fitting style make installation quick and easy. The compressor is designed to work with a wide range of refrigerants, making it suitable for automotive air conditioning systems. With its durable construction and reliable performance, it is the perfect choice for your bus. FleetPride is your First Click in Heavy Duty®.