The Western Star And Constellation 2006 And Newer Replacement Filter is a practical and efficient solution for maintaining your vehicle's performance. This replacement filter is designed specifically for Western Star And Constellation models from 2006 and newer, ensuring a perfect fit. Sold individually, this filter does not include the housing. With its high-quality construction, it effectively filters out impurities, ensuring clean and reliable operation. Upgrade your vehicle's filtration system with this reliable replacement filter.