Replaces John Deere OEM Number(s) AH1131R. Compatible with John Deere Tractor(s) H, HNH, HWH. Compatible with John Deere Engine(s) 100 (gas). Compression Rings per Piston: (2) @. 125″. Oil Rings per Piston: (1) @. 125″ & (1) @. 250″.