The LBZ was the 2006-2007 6.6L Duramax, widely regarded as one of the strongest and most reliable Duramax generations and the last before emissions DPF systems arrived. We carry OEM-brand LBZ parts - fuel injectors, CP3 injection pumps, turbochargers, and related fuel-system and engine components - many with no core charge and fast US shipping. Because Duramax parts vary by generation, verify the part against your LBZ by OEM cross-reference before ordering.