: The engine features an alloy cast iron block and head, forged-steel internals, and large bearings designed for extreme durability.
The Cummins NT855 engine is widely regarded as a legendary workhorse, and its manual highlights a "mechanical-first" design that makes it exceptionally reliable and user-friendly for heavy-duty applications. Key Design Features Cummins Engine Nt855 Manual
: It uses the Cummins Pressure-Time (PT) self-adjusting fuel system, which provides accurate metering and timing through camshaft-actuated injectors. Performance and Durability : The engine features an alloy cast iron