This is the genuine MaxJax® HVLP direct-drive cylinder that was designed to minimize leakage and offer better reliability and smoother operation. It features a one-piece, pilot-fitted machined steel piston wrapped with specially designed, pressure-loaded U-cup seals, backups and wear bands. The hardened chrome rod is machined from high-yield, ground and polished C-1045/50 micro-alloy steel to ensure superior cylinder operation and life. The welded cylinder body exceeds ASTM specifications. This is an OE Original Equipment part and is the same one that is installed on the MaxJax when it is first assembled in the factory.