They handed me one with all the other papers you get when you buy a bike. Its durn near wore out just looking at all the goodies, I can't afford. Maybe this one is not the one you're talking about.

 

There's a diff parts one, 1200C

 

No, that's the 12-Step Program book you're talking about!

There is a Parts Catalog that is specific to the year Sportster you own detailing all part numbers and exploded diagrams thatis being discussed here that Harley sells.