The Freightliner Business Class 1989 To 2009 Replacement Filter is a practical and essential product for your Freightliner truck. Designed specifically for the Freightliner Business Class 1989 To 2009 Filter (CAB-19535), this replacement filter ensures optimal performance and efficiency. Sold individually, this filter is a cost-effective solution that provides clean and filtered air for your truck's engine. Please note that the housing is not included with this purchase. Upgrade your truck's filtration system with this reliable and durable replacement filter.