Holset 4041617 Turbocharger Assembly HX55W

The Holset HX55W turbocharger assembly part number 4041617 is engineered for Cummins 11.0L and 15.0L diesel engine platforms including ISX15, QSX15, ISM, QSM11, and M11 series. This unit utilizes a wastegate turbine housing configuration for boost pressure regulation and is oil-cooled with engine lubrication supply. The compressor cover features a standard inlet connection and the turbine outlet uses a V-band clamp interface for secure exhaust manifold mounting. Manufactured by Cummins Turbo Technologies under the Holset brand, this turbocharger serves as direct replacement for Cummins OEM part number 4955552. It incorporates a forged milled compressor wheel and high-temperature alloy turbine wheel designed for sustained high-boost operation in heavy-duty truck, construction machinery, and marine propulsion duty cycles. Cross-reference interchange includes Holset service numbers 4041617H and 4047477 as well as numerous aftermarket equivalents for ISX2, Signature 600, and Tier 3 industrial applications.