FASS part number EGRC17 - I purchased this EGR filter system directly from FASS shortly after it was released. The system is complete and has never been installed. It was purchased for a 2017 Silverado 3500HD. According to FASS, it will fit 2017 to 2019 model year trucks. New, I paid over $1,500. If you’re looking at this ad, you most likely know the purpose of this system. However, complete details can be located at www.fassride.com/details?id=145819 Thanks for looking.