The Caterpillar 3822542 Fuel Filter Group is an advanced efficiency spin-on primary fuel filter designed to eliminate contaminants from fuel and protect Cat engines. With an outer diameter of 83.8 mm and a length of 139.7 mm, this genuine Cat filter ensures optimal fuel system performance and extends engine life across a wide range of articulated trucks, excavators, wheel loaders, and other heavy machinery operating in normal and severe conditions.