Description
When an AC compressor fails on an older vehicle, the repair cost can outweigh the vehicle’s value. However, because most modern engines use a single serpentine belt to drive all major components, a seized compressor can disable the entire system—leaving you without power steering, charging, or cooling. A compressor bypass pulley (or AC bypass pulley) offers a smart solution. It replaces the failed compressor using the same mounting points, allowing you to install a new serpentine belt and get the vehicle running again without costly AC repairs. Always ensure refrigerant is properly recovered before removal, and consider replacing the belt, tensioner, and idler pulleys for reliable performance.