The US part # for the right (passenger) side tensioner is XU3Z-6K254-BA
I also just finished up the 00M12 kit. Idles fine now when very cold outside, and most of the startup rattle is gone...............Im going to do the right side tensioner this week to hopefully get rid of the rest of the statup rattle.
Easy job for sure on the 00M12. I however didnt use the washer in the kit. I reused the copper washer on the original stocker, no reason to purchase another one or use the ****ty one in the kit. The stocker is fine to reuse and it will actually kind of snap into place on the tensioner so you dont have to worry about it not staying in place. Also if I was to do it again, I would have removed the EGR valve tube going into the upper intake. I believe it would have been easier to get the upper alignened and bolted down without fighting with the tube while trying to maintain placement of the upper.
Another tip is to remove the spark plug wire loom from the rear of the upper where it is bolted on, and just put the seperator on the wires in another spot not bolted to the intake. Its close to the loom by the firewall and this gives more space to align the upper..........