Holset 3590137 Turbocharger

The Holset HX30W turbocharger model 3590137 utilizes a 44 mm compressor wheel inducer and 68 mm exducer paired with a 52 mm turbine wheel. The turbine housing features a 6 cm² A/R ratio with a single-entry T3 flange and V-band exhaust discharge. An integrated pneumatic wastegate actuator regulates boost pressure for optimal low-to-mid range torque response. This assembly serves as a direct OEM replacement for Cummins 4BT, 4BTA, 4BTAA, and 4BTE 3.9L engine series (B3.9/EQB platforms). It cross-references multiple Holset service part numbers including 3592317, 3592318, 4033397, 4051240, and 4033301, as well as Cummins OEM numbers 3777304 and 4048418. The unit is widely applied in Kamaz and Dayun heavy-duty trucks and industrial power units. The rotating assembly is supported by a full-floating bearing system within the center housing rotating assembly (CHRA) part number 4027213. The compressor cover incorporates a ported shroud for surge margin improvement. Unit weight is approximately 11.5 kg. Professional installation with clean oil supply lines and prime procedure is required to maintain warranty validity.