Holset 4051432A Turbocharger Assembly

The Holset HX40W turbocharger assembly, part number 4051432A, is engineered for Cummins 6CTA and 6CTAA 8.3-liter diesel engines rated from 180 kW to 191 kW (245 HP to 260 HP). This unit features a wastegated turbine housing and an oil-lubricated center housing rotating assembly (CHRA) without water cooling passages. Manufactured by Holset (Cummins Turbo Technologies) at the Wuxi facility, it meets OEM specifications for direct replacement on Dongfeng Tianlong heavy-duty trucks and related industrial applications. The compressor and turbine wheels are precision balanced to ensure low vibration and high boost response across the operating range. The actuator is pneumatic wastegate type. Cross-references include Holset numbers 4051320, 4051321, 4051432 and Cummins OE number 3594117. Aftermarket interchange includes C4051432.