OE M3/M4 Oil Cooler Underhood Shield PN is 51758054269
Seen here:
https://www.realoem.com/bmw/enUS/sho...diagId=51_9841
The M2 Competition Oil Cooler Shield PN isn't loaded in RealOEM yet; however the visual diagram is the same:
https://www.realoem.com/bmw/enUS/sho...diagId=51_9841
Someone with a M2 Comp should get on this.