Holset 5276438 Turbocharger HX55 Assembly

The Holset 5276438 is a HX55 model turbocharger designed for Cummins M11, ISM, and ISME series diesel engines. This unit features a non-wastegated turbine housing configuration optimized for heavy-duty on-highway and industrial power units. It utilizes a fixed geometry turbine assembly with a compressor wheel matched to the high airflow requirements of the 10.8L and 11.0L displacement engine platforms. The cartridge assembly incorporates a high-efficiency compressor stage and a robust turbine wheel capable of sustained high exhaust gas temperatures. This turbocharger serves as a direct OEM replacement for Cummins part number 5276438, ensuring precise fitment and performance parity with original equipment specifications. Applications include heavy-duty trucks such as the Dongfeng Tianlong Flagship series equipped with Cummins ISM powerplants.