From the '09 catalog...
Intake Covers
M2224.4A8MCC - Without decals and X Guard
M3224.4A8AMCC - Without decals but with X Guard
Intake cover decals (see pic)
#4 - M0725.2AK
#5 - M0725.1AM
#6 - M0725.1AS
#7 - M0725.4AAYAL
#8 - M0725.4AAYCC
#9 - M0750.3AJ