Im not trying to make things difficult on you...but yes its tru, some people know the number by heart, but majority don;t because there, well, reuseable filters...so why should we know the part cause we won;t have to buy another.
If no one answers you soon. Try giving SP motorsports a call. there on the east cost and they can help you if no one here does. Sorry I can't be of any more help.
Roz