The Husqvarna E105996 3.7HP Air Compressor Pump Assembly 755H helps restore dependable air compression performance for compatible Husqvarna air compressors. It works by drawing in air and compressing it into the storage tank, delivering consistent airflow and pressure for pneumatic tools and equipment. Made to replace a worn, damaged, or inefficient pump assembly, it helps restore proper air output, improve compressor efficiency, and maintain reliable operation. This complete pump assembly features a durable cast-iron construction and is designed to support routine maintenance and extend the service life of your air compressor.