2S6708 Collector Fits Caterpillar ModelsOne New Aftermarket Replacement Pre Cleaner Dust Collector for Caterpillar (Cat) Engines and Equipment This aftermarket replacement pre cleaner dust collector fits Caterpillar (Cat) engines and equipment. The dust collector mounts to the pre cleaner assembly and separates coarse dust and debris from incoming air before it reaches the main air filter element, extending filter service life and protecting the engine in high dust operating environments.