The (4047231-RMN) is a turbocharger. This is a new direct-fit replacement built to OEM specifications and backed by PT Turbo’s 12-month unlimited-mile warranty. Remanufactured HE431VE Turbocharger – Cummins ISC/ISL 8.9L (4047231) This is a professionally remanufactured short turbocharger for Cummins ISC and ISL engines using the HE431VE platform. Designed to meet OEM specifications, it is built with new OE-grade internals, balanced to exacting tolerances, and thoroughly tested for durability and performance. Actuator not included – short turbo configuration. Key Features: Direct OEM short turbo replacement – actuator not included Professionally remanufactured using genuine Holset HE431VE cores VSR-balanced rotating assemblies for high-speed reliability New OE-grade bearings, seals, and thrust components Leak-tested, boost-tested, and final inspected prior to shipping Covered by 12-month unlimited mileage warranty Vehicle Compatibility: Bus and truck platforms with Cummins ISC and ISL 8.9L engines Built to meet EPA07 emission standards Compressor housing angle: 270° | Turbine housing angle: 61° Please verify part number before purchase Replaces the following part numbers: 2831599, 2831920, 2836522, 2836925, 2837248, 2837520, 2839423 3762069, 3772444, 3779353, 3792604, 4047231, 5282173, 5354644 5366454, 5456013, 5456013NX, 5456013RX Also cross-referenced with: 2835725, 2839573, 2842354, 3778791, 3778797 3786209H, 3795653, 3795654, 4045253, 4047236, 5354644NX, 5354645 Our Rebuild Process: Full teardown and multi-stage ultrasonic cleaning of all components Inspection of all housings and internals for cracks, fatigue, or damage VSR-balanced rotating assembly with high-speed vibration testing All-new OE-grade seals, bearings, and thrust components installed OEM-spec reassembly using calibrated torque procedures Final boost, leak, and flow testing to ensure ready-to-install condition Why Choose Our Reman Turbo? Built from genuine OEM Holset cores — never aftermarket shells Environmentally responsible and cost-effective Backed by a 12-month unlimited mileage warranty Includes installation gaskets for convenience *All PT Turbo units are professionally remanufactured OEM turbos — no aftermarket internals used.* Questions? Contact us during business hours (Mon–Fri, Pacific Time). Closed weekends and holidays. About This Remanufactured Holset HE431VE The Holset HE431VE is a variable geometry turbocharger found on mid-to-large Cummins diesel applications. Part number 4047231 identifies this as a specific calibration for your engine platform. The VGT mechanism on the HE431VE delivers excellent low-RPM boost response without sacrificing high-load airflow capacity — but the variable geometry actuator, unison ring, and nozzle vanes add complexity that eventually wears. Sticking vanes are among the most common HE431VE failures and can be misdiagnosed as fuel or injection system issues when the real cause is the turbo. This remanufactured HE431VE is rebuilt to factory specification at PT Turbo in San Bernardino, CA. All internal wear components are replaced — not cleaned and reused — and the cartridge is dynamically balanced before final assembly. What Is Replaced During Remanufacturing Journal bearings — compressor and turbine side Thrust bearing and thrust collar Compressor and turbine piston ring seals O-rings and gaskets throughout Any worn nozzle ring or unison ring components PT Turbo Expertise PT Turbo has specialized in Holset VGT turbocharger rebuilds since 1978 — long before variable geometry turbos were common in commercial diesel applications. If you have questions about whether this part number is correct for your engine or want to discuss rebuild options for your existing core, call or email our San Bernardino shop. We stock HE431VE cores and can typically ship within one to two business days.