Upgrade your Navistar Maxxforce 7 6.4L or V152 engine with the EPA2010 R2S Low and High Pressure Turbo, model B1+B2, from BORGWARNER. This new turbocharger is backed by a 1-year manufacturer's warranty and is designed to enhance both low and high-pressure turbo systems. Cross-reference numbers include 11559700050 and 178905. Note: It includes both low and high-pressure turbos.