When both your work and play depend on a truck that can pull its weight and then some, a Duramax engine is the power source that has risen to the top. The now-venerable diesel was a joint venture between GM and Isuzu in 2001, and has since become iconic in the Chevrolet Silverado and GMC Sierra. The 6.6L V8 has gone through a number of changes, now fine-tuned to produce ample torque while operating rather efficiently. The first iteration, the LB7 Duramax engine, ran from 2001 to 2004, finding its home in 3/4 and 1-ton pickups. It is strikingly powerful, producing 520 foot-pounds of rock-hauling, boat towing torque. However, it did not initially meet the needs of its customers. GM wanted to create the most reliable and utilitarian truck for the customer's dollar. Finally, in 2006, the LBZ Duramax engine was unveiled. The 2006 and 2007 version of the Duramax engine offers a better reinforced block and heads, a reliable fuel injection system, and an eye-popping 650 foot-pounds of torque. This translates to an even longer lasting, overpoweringly capable engine. These engines and even more updated versions exist on eBay, where trusted sellers are waiting to sell you the right replacement or upgrade for your truck.Shop the large inventory of motors, parts, accessories, and complete car and truck engines!