Stokie

I've been replacing the timing belt and pulleys in my 1999 Legacy Lancaster (a Japanese import similar to an Outback) with a kit from Amazon, I noticed that the rusty looking "guide" just left of the top cam on the right side (looking at the engine from mechanic perspective) was actually a small pulley with a destroyed ball bearing inside it. None of the belt kits I looked at, and I looked at many, included this pulley. All of the DOHC kits I saw included only the 2 smooth pulleys, the toothed pulley, and the hydraulic tensioner with its pulley. Can anyone please enlighten me why this would be? And where can I get the missing 5th pulley? Thanks.