Trüpower 2004.5-2005 Chevy/GMC 6.6L HD LB7 Duramax Diesel Fuel Injectors are manufactured using advanced processing & testing equipment. We adhere to strict quality control guidelines and OEM specifications to ensure superior injection timing, atomization, bulk mixing, air utilization and injection quality. Our engineers have more than 20 years experience manufacturing diesel injection systems and common rail components which allows us to produce injectors with increased durability, quieter performance, improved fuel economy, higher torque and lower emissions.