Description

The Cummins Holset Turbocharger with VGT Actuator (4352324RX or 4955401RX) is engineered to deliver robust boost performance and dependable operation for Cummins 6.7L ISB diesel engines . Featuring an advanced Variable Geometry Turbo (VGT) system, this turbocharger enhances airflow control, reduces turbo lag, improves low-RPM torque, and supports fuel-efficient combustion across a wide range of engine speeds. Built with premium turbine and compressor components, a precision-balanced rotating assembly, and a responsive VGT actuator, this turbocharger restores factory-level performance in trucks and equipment experiencing power loss due to worn or failed turbos. The integrated VGT actuator actively adjusts vane position for optimal boost delivery, improving throttle response and engine efficiency. This turbocharger assembly is ideal for replacement, fleet maintenance, engine rebuilds, and commercial diesel applications where durability and consistent performance are critical. PRODUCT FEATURES & COMPONENTS Complete Holset VGT turbocharger assembly Integrated Variable Geometry Turbo (VGT) actuator High-flow compressor wheel Durable turbine housing Balanced rotating group OEM-style seals and bearings ENGINE COMPATIBILITY Compatible with: Cummins 6.7L ISB Diesel Engines VGT turbo systems requiring part numbers 4352324RX or 4955401RX (Always confirm stage, configuration, and OEM reference before ordering.) VEHICLE APPLICATIONS Common applications include: Medium-duty trucks Commercial delivery vehicles Vocational work trucks Fleet diesel units Industrial diesel equipment (Exact fitment varies — check OEM reference and engine model.) KEY FEATURES & BENEFITS ✔ VGT (Variable Geometry Turbo) technology for better boost control ✔ Improved throttle response and low-RPM torque ✔ Enhanced engine power & fuel efficiency ✔ Durable turbo design with premium materials ✔ Direct replacement for worn or damaged turbos ✔ Suitable for fleet maintenance and rebuild programs ✔ OEM-style performance and fitment Frequently Asked Questions Is this turbocharger compatible with Cummins ISB 6.7L engines? Yes, this Holset turbocharger with VGT actuator fits Cummins 6.7L ISB diesel engines and replaces part numbers 4352324RX or 4955401RX when matched to the correct configuration. What is VGT technology? VGT stands for Variable Geometry Turbocharger, a system that adjusts internal vanes to optimize airflow and boost pressure at different engine speeds, improving responsiveness and efficiency. Will this turbo improve engine performance? Yes, the VGT actuator provides improved boost control, faster spool response, and enhanced torque delivery compared to non-VGT turbos. Is this unit a direct replacement? When the part number matches your engine’s OEM reference (4352324RX or 4955401RX), this unit installs as a direct replacement without major modifications. Do I need a professional to install this? Yes, professional installation is recommended to ensure correct setup, boost calibration, and turbo actuator integration.