Yes, part number is NJA3558AA 
BMC CDA can be installed on every car, also on Ferrari, Lamborghini, Maserati, is designed for race and installing is not so immediate, requires a "project" and intake system must be slightly modified to get a place where to let breathe the CDA.Cone filters cannot be fitted to 4.2 litre cars without destroying original equipment. Tried it and wasn't prepared to do that.
I have XK8 not XKR but looking on the workshop book i see that XK8 and XKR use the same air filter part. I have no idea about the second air filter, here is not mentionedI have a 1999 XKR, does this have 2 airfilters, i can only see 1, o/s front????
Are you describing the intakes on the current X150 XK model? All xkrtry here it has pics and instructions 2007 Jaguar XK air filter replacement if you have the XKR then it is duplicated on the other side as well