Holset 4049015 Turbocharger Assembly HX35W

The Holset HX35W model 4049015 is a wastegated turbocharger designed for Cummins B-series 5.9L (6BT, ISB, ISBE) and 6.7L (QSB, ISB) diesel engines. It features a compressor wheel inducer diameter of 52-54 mm and a turbine wheel inducer of 70 mm. The turbine housing utilizes a T3 flange configuration with variable A/R ratios (commonly 8 cm², 10 cm², or 12 cm² twin-entry) depending on specific engine calibration. The unit integrates a pneumatic wastegate actuator for boost pressure control. The center housing rotating assembly (CHRA) employs a full-floating journal bearing system lubricated and cooled by engine oil. The compressor cover includes a standard 3-inch (76 mm) outlet. This assembly serves as a direct OEM replacement for numerous Cummins part numbers and is widely applied in heavy-duty trucks, construction machinery, agricultural equipment, and power generation units.