The 209 has a base plate by pass. Does the 209A now have a dome end by pass? I Googled it but the only thing I was able to find was that the 209A weighs more than the 209. shrug

2007 F150, 4.2 V6
Havoline PRO DS 5W20, M1-209A
"One Filter, One OCI!"
"One Box, One OCI!"