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 OEM application is unknown, making this an excellent option for equipment repair, fabrication projects, replacement applications, or hydraulic system builds. New Old Stock (NOS) Condition? Industrial / Agricultural Grade Component? Review all photos carefully as they are part of the description.