The FASS 165 GPH Fuel Lift Pump is a high-performance accessory designed specifically for 2001-2010 Sierra 2500 and 3500 Duramax 6.6L Diesel trucks. Manufactured by FASS Fuel Systems, this pump offers enhanced fuel delivery to ensure improved engine performance and efficiency. With its durable construction and reliable operation, this fuel lift pump is an essential component for any diesel vehicle looking to boost fuel system capability.