Reed, for the D2840 MFG engine we found following # from KS Kolbenschmidt Pierburg
Oilfilter 50013024, Fuelfilter 50013021, Aircleaner 50013037, Air Dryer 50013305
Cross reference to MANN/HUMMEL
Oilfilter H12110/3, Fuelfilter P811x, Aircleaner C301537 or C30850/2, Airdryer TB1374/13x
If...