Set of 3 NGK glow plugs for the listed models. They are not the exact OEM part but very close in specs. I have them in my 455 and gator and cannot tell the difference between these and the OEM plugs. They will work in anything that calls for M87919. Which are John Deere 330 332 430 455 655 755 F915 F925 F935 X495 and X595 models. As well as a Gator 6x4 Diesel with the 3TN66C Yanmar Motor. Compatible with the Yanmar 3TN66C, 3TN66UJ, 3TNA72UJ, 3TNA72UJ3, 3TNA72UK and 3TNE74. These won’t work in a X595 and X495 with the 3TNV76 Yanmar it’s a different part number. Ask questions. Thanks for looking