The IPR Injection Pressure Regulator Valve DT466E is a direct replacement part manufactured by Auto_star for International Navistar DT466 engines. It has a 3-year manufacturer warranty and can replace several part numbers, including F81Z-9C968-AB and F81Z9C968AB. This Injector Pressure Regulator Valve is an essential component of the fuel injection system and is responsible for regulating the fuel pressure to ensure optimal engine performance.