I just replaced mine the other day too. Mine was throwing a p0013 for the exhaust one. So, I replaced both since they redesigned them.
Exhaust - 12646784
The old part #'s were 12628347 and 12628348. Also, the old ones are painted black and the new ones are nice and chrome looking. lol.
Last edited by x-ception; 06-11-2012 at 12:07 AM.