No O-Ring Grooves On SleeveIncludes: (1) Cylinder Sleeve(1) HCRNAR71618 Liner Sealing Ring Kit(1) HCRNAR87736K Piston(1) HCRNAR55759 Piston Ring SetThe HCRNRE53322 Cylinder Kit, High Compression, 1.375" Piston Pin Diameter fits equipment brands such as: John Deere