'08 RR S/C Air Filter part numbers: Fram CA4235 or K&N E2350
Get the K&N and never buy another filter. Get the K&N kit (cleaning fluid and special oil) for the filter. I ran K&N air filters on 2 Jags (1990 XJ6 normally aspirated and 1999 XJR super charged) for a combined 250,000+ miles and on my '88 Range Rover for 300,000+ miles. I also have put over 55,000 miles on my BMW GS with no problems. I'm putting one into my '08 RR S/C soon.