2006 - 2007 6.6L Duramax LBZ

The LBZ Duramax has a strong reputation because it makes good power without the later emissions equipment, but these trucks are old enough now that engines, heads, ECMs, injectors, and rebuild parts are all common shopping paths.

Turbochargers, intercooler piping, manifolds, and airflow upgrades become more important once exhaust heat and towing load start climbing past what the factory setup was designed around. If you are comparing an engine, long block, or head replacement, verify the build details and core requirements before ordering.