Holset 4090027 Turbocharger Assembly HX80

The Holset 4090027 is a frame-size HX80 turbocharger designed specifically for the Cummins KTA50 series diesel engines. This unit utilizes a wastegated turbine housing configuration to manage boost pressure across the operating range of the 50-liter V16 power unit. The compressor and turbine wheels are optimized for the high airflow demands of the KTA50 platform, typically rated between 1,350 to 2,000 horsepower in generator set configurations. Constructed with a forged compressor wheel and high-temperature alloy turbine wheel, the rotating assembly is balanced to ISO standards for high-speed stability. The bearing system employs full-floating journal bearings and thrust bearings lubricated by engine oil supply. This turbocharger serves as a direct OEM replacement for Cummins part number 4090027 and cross-references to 3804865, ensuring fitment integrity for industrial power generation packages.