Hello McLean, it is stated on the installation manual as the KIT NO. for the 100/120-2,3 which is 9227242 and that is from Hitachi. I bought my own from the Chinese which comprised of both the 100/120-2,3 and 200/220-2,3 and its on my EX200-2 presently but I am in the process of putting it back original so I have purchased the EC computer which was burnt, the N, A, P and DP sensors if these parts mention doesn't make it work then i know i will have to change the harness base on its condition but i have done some repairs on it, so let see what will turn out. Hey let me inform you that the mecha-regulator is to bypass the electrical system connected to the pump so if your pump is giving trouble it will not work properly.