Help with identifying p/n for timing belt tensioner pulley and idler pulley

[djmarch]

buy the "kit" from rock auto or ebay. it will have both, and the water pump.

I hear you petrified.rabbit, but the dealer told me he will only supply the timing belt, so when their shop has the Aveo opened up I want them to replace the water pump, tensioner and idler pulley as well. At my cost on the parts of course..