Hi Stuart

I’m sorry I cannot help with you DGi filter
Regarding the Duratec it is my understanding that 1751529 is the part no (shown on my local Ford garage invoice) and AA6E 6714 AA the oem no. Both are normally stamped on the filter housing itself (if ever doing a filter cross reference search use any/both numbers).

Cat302.
What did the dealer say when he managed to get to his feet?

Regards

Geof
70th Anniversary 4/4 (Duratec 1.8), model 1995