[Shamu406]

I am in the process of swapping the solenoid control valves between the curb and street sides.  The air cylinder is only a year old but if the swap does not work, I will take the cylinder apart.  The ARO solenoid control valve part number is A212SD-O12D.  I have seen some for sale that look identical, but with a slightly different part number.

Someone earlier in this thread said the part # was A212SD-000-N.
Which one should I get? Would like to get the rebuild kit for it first though.