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The Holset HE221W Turbocharger is the original equipment (OE) specified turbocharger designed and manufactured by Cummins-owned Holset, exclusively for Cummins 4-cylinder diesel engines. As a factory-matched component for Cummins ISDe4, QSB4.5/3.9L and 4H series engines, this turbocharger has earned its reputation as the "golden match" for 100-160 horsepower medium-small displacement diesel engines in the commercial vehicle sector.
Trusted by fleet operators and equipment manufacturers worldwide, the HE221W has been rigorously tested and proven in millions of light trucks, construction machinery and buses operating under heavy-load and long-duration conditions. Its optimized design perfectly balances responsive power delivery and exceptional fuel efficiency, helping businesses reduce operational costs and maximize uptime. Whether you are replacing a worn turbocharger or upgrading your engine performance, the genuine Holset HE221W (part numbers 5605388 and 5605389) delivers the reliability and performance you expect from a Cummins-approved component.
Manufactured in Holset's state-of-the-art facilities to strict OE standards, the HE221W turbocharger is engineered to integrate seamlessly with your Cummins engine. Every component is precision-machined from high-grade materials, including heat-resistant cast iron for the turbine housing, ensuring exceptional durability even in the most demanding operating environments. This original equipment quality translates to fewer breakdowns, reduced maintenance costs and extended engine service life.
The HE221W features an advanced 6+6 split-flow impeller design with a 43.5mm inlet and 61mm outlet. This configuration delivers outstanding compression efficiency, allowing the turbocharger to build boost pressure rapidly and eliminate low-speed lag. The large-diameter outlet connects directly to the intercooler or intake manifold, simplifying installation and minimizing air leakage risks. This results in improved throttle response, better low-end torque and enhanced overall vehicle performance, particularly when starting with heavy loads or climbing steep grades.
Equipped with an 11-blade turbine wheel (52mm inlet / 45.7mm outlet) paired with a 7cm² turbine housing, the HE221W efficiently harnesses exhaust gas energy to drive the compressor. The square flange design provides a secure, leak-proof connection directly to the engine exhaust manifold, while the high-temperature cast iron construction withstands the extreme heat generated by diesel engine exhaust. This efficient energy recovery system improves fuel economy by up to 15% compared to aftermarket alternatives, significantly reducing your fleet's fuel expenses over time.
The built-in pressure-controlled wastegate system is driven by compressor pressure signals, automatically bypassing excess exhaust gases during high-speed or high-load operation. This prevents over-boosting that could damage the engine and ensures consistent, reliable power output across the entire RPM range. The integrated design eliminates the need for external components, reducing complexity and potential failure points, making it a critical component for maintaining engine reliability and longevity.
The HE221W incorporates a floating bearing design with integrated oil lubrication and cooling channels that work in harmony with your engine's oil circulation system. This system provides continuous, reliable lubrication to the turbine shaft, which spins at speeds exceeding 100,000 revolutions per minute, effectively preventing overheating and premature wear. The result is a turbocharger that delivers consistent performance throughout its service life, with extended maintenance intervals compared to competing products.
Parameter | Specification |
|---|---|
Model | HE221W |
OE Part Numbers | 5605388, 5605389 |
Manufacturer | Holset (Cummins) |
Compatible Engines | Cummins 4H, ISDe4, QSB4.5/3.9L |
Power Range | 100-160 HP |
Compressor Impeller | 6+6 split-flow, inlet 43.5mm, outlet 61mm |
Turbine Wheel | 11-blade, inlet 52mm, outlet 45.7mm |
Turbine Housing | 7cm², square flange |
Actuation | Internal wastegate, pressure-controlled |
Bearing System | Floating bearing, integrated oil lubrication/cooling |
Primary Applications | Light trucks, construction machinery, buses |
Cummins 4H series diesel engines
Cummins ISDe4 series diesel engines
Cummins QSB4.5/3.9L series diesel engines
Dongfeng light trucks equipped with Cummins 4H engines
Foton light trucks powered by Cummins 4H series engines
Construction machinery including excavators, loaders and generators with Cummins 4-cylinder engines
City buses and coaches fitted with Cummins ISDe4 engines
Agricultural machinery and industrial equipment using Cummins QSB4.5 engines
We are an authorized distributor of genuine Holset turbochargers, committed to providing our customers with the highest quality products and exceptional service. When you purchase from us, you receive:
100% Genuine Holset Parts: All our turbochargers are sourced directly from Holset, ensuring you receive authentic OE-quality components.
Rigorous Quality Control: Every unit undergoes comprehensive performance testing before shipment to guarantee it meets or exceeds factory specifications.
Extensive Inventory: We maintain large stock levels of 5605388 and 5605389 turbochargers, enabling fast dispatch to locations worldwide.
Expert Technical Support: Our team of certified diesel engine technicians is available to provide installation guidance and troubleshooting assistance.
Competitive Pricing: Our direct relationship with Holset allows us to offer competitive prices, especially for bulk orders.
12-Month Comprehensive Warranty: All our turbochargers come with a 12-month warranty against manufacturing defects, giving you complete peace of mind.
Yes, all our HE221W turbochargers are 100% genuine Holset products manufactured by Cummins. We provide full documentation and traceability for every unit.
This turbocharger is specifically designed for Cummins 4H, ISDe4 and QSB4.5/3.9L engines. Please confirm your original part number is 5605388 or 5605389 before placing your order.
Each unit comes complete with the turbocharger assembly, wastegate actuator and all necessary gaskets for installation.
Yes, we offer significant discounts for bulk orders. Please contact our sales team for a customized quote based on your quantity requirements.
Orders are typically dispatched within 24 hours of payment confirmation. Delivery times range from 3-7 working days depending on your location.
We provide a 12-month warranty for all Holset HE221W turbochargers. The warranty covers manufacturing defects and material issues, excluding damage caused by improper installation, lack of maintenance or misuse.
Ready to upgrade your Cummins engine with a genuine Holset HE221W turbocharger? Fill out our online quote form with your company details, required quantity and any special requirements, and our sales team will respond with a competitive quote within 24 hours. We also offer custom packaging and private labeling services for volume customers. Don't compromise on quality – choose the original Holset turbocharger for unmatched reliability and performance.
