PERFORM 6500 XL C5 Portable Power Generating set, equipped with KOHLER engine. KOHLER air-cooled industrial engine Large Autonomy Good value for money Starting up facilitated thanks to the summer/winter positions QUAD CLEAN AIR FILTER The Cyclonic Quad Clean air filters provide 4 levels of filtration which effectively filter out large particles and capture the finest particles. They ensure a continuous supply of clean air to the engine, fuel economies, increase the engine performance and extend its lifetime