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The Holset HE351W turbocharger is a proven, factory-engineered solution designed specifically for Cummins diesel engines. Manufactured by Holset, the official turbocharger brand under Cummins, this unit delivers reliable performance and long service life in demanding commercial vehicle applications. As a fixed geometry turbocharger with a mechanical wastegate, the HE351W offers a balance of low-end torque and high-speed stability, making it the preferred choice for commercial fleet operators and equipment maintenance providers worldwide.
This direct replacement turbocharger matches the original equipment specifications exactly, ensuring seamless installation and optimal engine performance. It is engineered to withstand the high temperatures and heavy loads associated with diesel engine operation, providing consistent boost pressure across the entire engine RPM range.
Specification | Value |
|---|---|
Turbocharger Model | HE351W |
OEM Part Numbers | 3960478, 4043982, 3790345, 3790346, 2834798, 4038597 |
Type | Fixed geometry with mechanical wastegate |
Boost Pressure Setting | 1.8-2.0 bar |
Maximum Turbine Speed | 120,000 RPM |
Compressor Inlet | V-band clamp connection |
Turbine Outlet | Dual-scroll twin-port flange |
The HE351W turbocharger is primarily designed for Dongfeng Cummins ISDe 210 and ISDe 245 Euro III engines, available in both 4-cylinder and 6-cylinder configurations. It also provides excellent compatibility with Cummins QSB6.7 series engines, making it a versatile replacement option for a wide range of diesel-powered equipment.
The HE351W features a robust mechanical wastegate system, identified by the "W" in its model name. This system includes a pressure actuator (the metal canister on the left side) connected via a linkage to the wastegate valve. It senses boost pressure through a pressure tap on the compressor housing and opens the wastegate when pressure exceeds the factory setting, preventing turbo overspeeding and excessive cylinder pressure. This design ensures reliable operation without the complexity of electronic variable geometry systems.
The compressor housing (upper silver housing) features a V-band clamp connection for easy installation and maintenance. The compressor wheel is engineered to build boost quickly at low engine speeds, perfectly matching the low-end torque characteristics of the ISDe engine series. This results in improved throttle response and better performance during acceleration and hill climbing.
The turbine housing (lower cast iron housing) incorporates a dual-scroll twin-port design that efficiently harnesses the energy from exhaust pulses. This design enhances low-speed responsiveness and reduces turbo lag, allowing the engine to deliver power more smoothly across the RPM range. Constructed from high-temperature resistant cast iron, the turbine housing can withstand the extreme exhaust temperatures generated by diesel engines.
The center housing integrates full floating bearings and a pressurized oil lubrication system, which uses engine oil to lubricate and cool the rotating assembly. This design provides exceptional support for the turbine shaft, which can rotate at speeds up to 120,000 RPM. The robust construction ensures long service life even under continuous heavy-duty operation.
This HE351W turbocharger is widely used in medium and heavy-duty commercial vehicles, including:
Dongfeng Tianjin series trucks
Yutong passenger buses
Construction machinery equipped with Cummins ISDe or QSB6.7 engines
Agricultural equipment and power generation units
Our HE351W turbochargers are manufactured to meet or exceed original equipment specifications, ensuring reliable performance and long service life. We offer direct-fit replacements that require no modifications, reducing installation time and labor costs. The modular design allows for easy repair of common issues such as oil leaks or wastegate malfunctions, further lowering maintenance expenses for commercial operators.
We maintain a large inventory of these turbochargers to support fast shipping, minimizing downtime for your fleet or equipment. Whether you need a single replacement unit or bulk quantities for your maintenance operation, we can provide the right solution to meet your needs.
The HE351W is a fixed geometry turbocharger with a mechanical wastegate, while the HE351VE features an electronic variable geometry system. The HE351W has a simpler design, lower cost, and is more suitable for Euro III emission standard engines. The HE351VE offers more precise boost control but is more complex and expensive to maintain.
The HE351W is primarily designed for Dongfeng Cummins ISDe 210 and ISDe 245 Euro III engines (4-cylinder and 6-cylinder). It is also compatible with Cummins QSB6.7 series engines.
The factory boost pressure setting for the HE351W turbocharger is 1.8-2.0 bar.
