Cummins QSB4.5 Engines

Cummins QSB4.5 Engines

Cummins QSB4.5 engines are 4.5-liter, 4-cylinder industrial diesel engines designed for dependable performance in off-highway and industrial equipment. They are commonly used in construction, agricultural, and material-handling applications where compact size and consistent power are required.

These engines are available in Tier 3–compliant configurations, including 139 HP @ 2000 RPM models, and feature electronic engine controls, direct diesel injection, turbocharging, and charge air cooling. New crate engine options with zero hours make the QSB4.5 a practical choice for replacement and OEM use.