The EGR Cooler is for a International / Navistar DT466 HT570 2004,2005, 2006, and 2007 MAXXFORCE 10 2008 and 2009 MAXXFORCE DT 2008. It is square shaped and a fixed fitting. For a non fixed fitting 710542. It is remanufactured and has a $225 core charge. Please add Ace # 710542FCOR at checkout.