Description Fleetguard AF1968M is a primary engine air filter element with pleated paper media for heavy-duty on-road and off-highway applications. It has an overall height of 568.96 mm, largest outside diameter 296.42 mm, end 2 outside diameter 269.04 mm and end 2 inside diameter 170.38 mm. Cross-references include Donaldson P153551, P185053 and EAF5053, Baldwin PA2705, Caterpillar 3I0415, Ryco HDA5986, Mack 85123524, Mann C30800, Volvo 220055064 and 3946288, Wix 46883 and 46883NP, and Fiat-Allis 70640-N.