i wonder if that disk can be bought new ???

I would strongly recommend to replace the bearing as well its a little more labour but for a $5 part it could save your new CAS failing, when the bearing gets rusty the fine dust can **** the sensor

I was having rough idle issues with mine. Pulled CAS apart (using this guide) Used contact cleaner on everything, pry'd the little cas/sensor piece out a little sprayed the $%^& out of it, Sprayed all over the little disk, put it all back together lightly sanded/cleaned the contact points on the rotor button re-installed runs like a dream. Checked ECU diags. and no codes for this are appearing, and was able to get the tune (red/green lights - flashing in sync) by following the other guide on tuning (AFM anti-clockwise screw to richen it up) I was willing to replace the cas, but thought it would be worth a shot at cleaning it first

my cars not kicking over. it wants to start but its like it isnt getting any spark. do you reckon it can be the cas or what ?