<strong>Yahoo Message Number: 484</strong>The owner's manual for the Power Tech CD7000 (7 Kw) genset lists the proper Air Filter is a "Donaldson #CO 4500". The local Donaldson distributor has advised me that Donaldson part numbers have five digits not four. Two obvious choices according to him are "Donaldson #CO 45001" and "Donaldson #CO 45002". Does anyone know which of these is the...