Donaldson, MANN + HUMMEL and Cummins (Fleetgard) protect the most valuable on and offroad engines in the world. Chances are Donaldson and Cummins won't make a filter for your D2, however MANN + HUMMEL should.
All these companies are major OEM suppliers and guanartee all of their filters are "equal to or better than OEM"
Coopers (not cooper), mahle, delphi, fram, purolator and baldwin also generally make high quality filters.

