My EGR blanking unit arrived yesterday so today I fitted it. Real easy job until butterfingers takes over. Can anyone tell me the size of the egr securing bolts. I dropped one down in the guts of the front suspension/transmission never to be found again. Otherwise a very simple job. The new unit is secured by three bolts instead of four. In my defence I am left handed and some time ago I lost the top off my thumb making twiddling of bolts nuts etc somewhat of a challenge.