QSB 3.3L turbo assembly

The Cummins QSB 3.3 Turbo Assembly OEM 4955494 is an OEM-quality replacement for 3.3L diesel engines (2018–2022). Designed to restore turbo boost, improve engine performance, enhance fuel efficiency, and maintain emissions compliance. Ideal for construction, agricultural, and industrial diesel machinery, this turbo assembly delivers OEM-level reliability, precise boost control, and long-lasting heavy-duty performance.