Dorman 34152 A/C Compressor Bypass Pulley

Modern vehicles often use one serpentine belt to drive all accessories including the water pump alternator power steering and a/c compressor. Due to the high cost of a/c compressor replacement a vehicle can be rendered undriveable if the compressor seizes and causes the belt to break. If a vehicle has high mileage it may not be economical for a customer to replace the compressor when the cost of the repair approaches the value of the vehicle. An a/c bypass pulley provides an option to keep the vehicle running.