D douglong Well-Known Member Supporting Member Joined Jul 21, 2015 Messages 573 Aug 30, 2023 #1 Can anyone explain what the difference between the O'Donnell glow plugs, 287 and 289 Thanks
Danny King Well-Known Member Joined Nov 26, 2012 Messages 2,305 Aug 30, 2023 #2 287 is hotter good for .21 And some .45 289 is colder good for .67 And 91/101 and in some .45