However, for someone mechanically inclined, with a large assortment of tools and previous experience pulling cylinder heads, it can be done without removing the cab or engine from the chassis. This is an extremely labor-intensive job, and in most cases, should only be handled by professional repair shops with experience in motor work. OEM style fittings ensure leak-free seal. Since the factory ones are prone to internal corrosion and debris build up, Merchant offers new hard stainless lines that require no core’s to be returned. This repair job will be getting all new Merchant Automotive injectors, replacing the factory injector lines is always a good idea. The exhaust manifold and up-pipe gaskets shown here are also an option to the base kit. It’s an engine that is super reliable and fully capable of doing anything a truck owner needs, whether it’s used for towing construction equipment around all week or tearing up the drag strip on Friday nights. Sure, it received some updates and changes as the years went on to better fit emissions requirements, but there is no doubt that the Duramax engine has been a homerun for GM. While that LB7 platform was replaced with the LLY in the middle of 2004, the basic internal design of the Duramax has been left virtually unchanged up to the 2016 model year. The revolutionary V8 diesel used aluminum cylinder heads and a common rail fuel injection system with a high pressure CP3 injection pump that made everyone a skeptic. IN-DEPTH LB7 DURAMAX HEAD GASKET AND FUEL SYSTEM REPAIRĪt the time of its introduction in 2001, the LB7 Duramax was considered the most advanced diesel engine to be used by any OEM in the light duty truck market.
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