Holset 4029192 Turbocharger HX40W Assembly

The Holset HX40W is a water-cooled, wastegated turbocharger designed for Cummins mid-range diesel engines including the ISC, QSL, and 6CTA series. It features a compressor wheel optimized for high boost pressure and a turbine housing with integrated wastegate actuator for precise boost control. This unit serves as a direct OEM replacement for Cummins part numbers 4029192 and 4029191, along with numerous cross-references such as 4039910, 4040281, and 4039140H. Applications span heavy-duty trucks (Kenworth, Peterbilt), construction machinery (Komatsu PC300-8), agricultural equipment, and industrial power units. The cartridge (CHRA) is serviceable with standard repair kits.