General Motors (GM) introduced the 6.6-liter Duramax LB7 in 2001 as a replacement for the Detroit Diesel Corporation (DDC) V8 engine helping establish the automaker as a legitimate competitor in the diesel marketplace.
In addition to a turbocharger and intercooler, GM introduced the LB7 Duramax with an innovative new technology, the Bosch Common Rail Injector. The high-pressure rail combines the pump and injectors to create a central hydraulic component that stores the compressed fuel and supplies it to the injectors. The Duramax design also employed lightweight aluminum alloy cylinder heads well ahead of its closest competitors. Ford did not introduce aluminum cylinder heads until a decade later when it debuted the 6.7-liter Powerstroke in 2011.
福特6.7L Powestoke 引进非铝缸盖。福特柴油版使用该发动机较多。
GM installed the Duramax in the first-generation Chevrolet Silverado HD and GMC Sierra HD.