OE Replacement 6.6L LB7 DURAMAX DIESEL LONG BLOCK ENGINE WITH FEDERAL EMISSIONS, FRONT MOTOR MOUNT (2500 & 3500 SERIES) (MUST REPLACE/TEST INJECTORS) GPT6NN6LB7FEF36AA - Go Powertrain LLC
15 Best LB7 Duramax Performance Upgrades - 2001-2004 Duramax Mods