Holset 5699848X Turbocharger Assembly

The Holset 5699848X is a turbocharger assembly engineered for Cummins heavy-duty diesel engine platforms. It utilizes a radial turbine and centrifugal compressor configuration constructed from high-temperature alloys and aluminum compressor wheels to withstand extreme exhaust gas temperatures and rotational speeds. The unit integrates a precision-balanced rotating assembly (CHRA) supported by journal bearings and thrust bearing systems requiring clean engine oil supply at regulated pressure. Wastegate actuation may be pneumatic or electronic depending on specific engine calibration requirements. This assembly serves as a direct replacement for OEM part number 3527758 and compatible variants across HX30, HX40, HX50, and HX55 frame sizes. Material specifications include cast iron turbine housing for thermal fatigue resistance, aluminum compressor housing, and Inconel 713C or equivalent turbine wheel material. The compressor wheel is typically forged aluminum (A357 or similar). Critical clearances and trim ratios are calibrated to match original engine boost maps and emissions certification. Installation requires new gaskets, oil feed line inspection, and prime procedure to prevent bearing starvation on initial startup. Interchangeability verified against Cummins service bulletins for ISX, ISM, ISL, and ISB engine families.