The Caterpillar 6I0274 is a genuine Cat secondary air filter insert designed to provide standard efficiency filtration, protecting your engine from harmful particulates. Constructed with cellulose media and featuring a radial seal, this filter ensures reliable performance and extends engine life. It is compatible with a wide range of Caterpillar industrial engines, excavators, wheel loaders, motor graders, compactors, telehandlers, and track-type tractors.