Cummins Oil Drain Plug *Please verify your OEM number(s) before purchasing. Oil Drain Valve for Cummins Engines OEM Part Number References: 3055069 Fits Cummins Engines (1974 - 2009): ISL L10 M11 N14 Rubber Expanding Plugs Thread Size: 1-18 UNS Head Size: (SAE/Metric): 1.5 Covered by a 3-Year Warran... See More