CARDONE Power Cylinders are remanufactured to meet or exceed O.E. performance. All critical components are tested to ensure proper fit, function, and consistent quality. Product Features:Each Power Cylinder is computer tested to measure pressure, bypass, fluid flow, valve operation, steering effort and noise to ensure quiet, like-new performanceUnits are supplied with all new O.E. style seals and O-rings to eliminate chance of leaksGuaranteed fit and functionMeets or exceeds O.E.M performance