Description

Cummins ISX QSX15 Engine Holset HE551V 3786264 Turbo Turbocharger The Holset HE551V Turbocharger 2881994RX with actuator is a robust turbocharging unit engineered for Cummins ISX and QSX15 diesel engines used in heavy-duty commercial trucks and industrial applications. Featuring a built-in actuator , this turbocharger provides precise boost control by communicating with the engine control system, resulting in improved throttle response, reduced turbo lag, and optimized airflow throughout the RPM range. Manufactured with precision-balanced compressor and turbine wheels, durable bearings, and a strong turbine housing, this turbocharger unit is built for demanding service conditions where reliability and performance are key. The variable geometry design allows the turbo to adapt vane positions, improving low-end torque and overall engine efficiency. Ideal for replacement, repair, or fleet maintenance , this HE551V turbocharger restores factory-rated boost and contributes to better fuel economy and engine longevity. Product Features & Components Holset HE551V turbocharger assembly with actuator Precision-balanced compressor and turbine wheels Built-in actuator for accurate boost regulation Variable Geometry Turbo (VGT) vane mechanism Heavy-duty bearing and sealing system Durable turbine housing rated for heavy-duty diesel use OEM-equivalent performance and fitment Engine Compatibility ✔ Cummins ISX diesel engines ✔ Cummins QSX15 diesel engines OEM Reference Part Number: • 2881994RX (Confirm engine model and OEM part match before purchase.) Vehicle & Equipment Applications This turbocharger is suitable for: • Heavy-duty long-haul trucks with Cummins ISX/QSX15 engines • Commercial and fleet vehicles • Vocational and heavy-equipment vehicles • Industrial diesel applications requiring high reliability Key Features & Benefits ✔ Restores factory boost and torque delivery ✔ Improves throttle response and drivability ✔ Built-in actuator ensures accurate boost control ✔ Variable geometry tech optimizes performance ✔ Durable design for extended service life ✔ Direct replacement for worn or failed turbos Frequently Asked Questions Which engines is this turbocharger compatible with? This Holset HE551V turbocharger (2881994RX) with actuator fits Cummins ISX and QSX15 diesel engines used in heavy-duty truck applications. What does the actuator do? The integrated actuator helps regulate turbo boost by communicating with the engine control system, optimizing airflow and torque response while reducing turbo lag. Is this a direct replacement part? Yes. When matched with the correct OEM reference (2881994RX), this turbo installs as a direct replacement without major modifications. Will this turbo improve engine performance? Yes. It restores factory boost pressure, enhances torque delivery, improves throttle response, and supports efficient combustion. Should professional installation be done? Yes, professional installation is recommended to ensure proper calibration, fitment, and reliable long-term performance.