NOS Heavy Duty Hydraulic Cylinder - Never Installed. Offered for sale is a heavy-duty double-acting hydraulic cylinder marked S17K13C. This unit was discovered still wrapped in protective plastic and appears to be new old stock that was never placed into service. Built with a substantial 1.25" chrome rod and 3.25" barrel diameter, this cylinder is suitable for a wide range of agricultural, industrial, construction, and custom hydraulic applications. The cylinder features dual hydraulic ports for powered extension and retraction along with robust pin-style mounting points. The exact ...