The Keestrack P124867 external air filter, manufactured by Donaldson, is a high-quality replacement part designed to protect Keestrack equipment engines from harmful contaminants. With an outer diameter of 210mm, inner diameter of 105mm, and a length of 330mm, this robust filter weighs 1.2kg and is crucial for maintaining efficient air intake and prolonging engine life in various Keestrack models including R3, R5, K3, K4, K5, K6, K7, S150, S175, S190, S250, S300, S350, S400, S450, S500, S550, S600, S700, S800, S900. It cross-references with Keestrack part number 100100010000.