Description Fleetguard AF1969M is a primary axial seal air filter cartridge for heavy‑duty diesel engines in Freightliner FLA/FLB/FLC and Mack CH/CL trucks and other applications using Cummins, Caterpillar, Detroit Diesel and Mack engines. It has a cylindrical axial‑seal design with approximately 721 mm overall length, 269 mm outer diameter and 170 mm inner diameter at the outlet to suit the specified air cleaner housings and provide intake air filtration. Cross‑reference equivalents include Donaldson P185047/P150695, Baldwin PA2680, Fram CA6512, Purolator A84433, Mack 57MD42M and Volvo 1110903.