The Husky E105990 Pulley transfers power from the motor to the compressor pump for smooth and efficient operation. Designed as a replacement motor drive pulley, it fits compatible Husky air compressors, including select 60-gallon models, and works with A-section (4L) V-belts. It works by rotating with the motor shaft to drive the belt, which transfers power to the compressor pump. Thi... https://www.wholetoolbox.com/husky-e105990-pulley