I have a Ransomes lawn mower that has a Kubota D905 engine. I have been trying to get replacement glow plugs and not having much luck. The dealer sent me 16851-6551-2 (NGK YE01) plugs which appear the same other than they are 8mm and mine are 10mm. The only # on the old plugs are stamped on the head where you would put a wrench to pull the plug out, 1 flat has JKC, another has 11V and the other has 3C....JKC 11v 3C. No one seems to recognize this #. If anyone here knows anything it would be a great help.