Holset turbocharger Iveco Stralis AS 10.0

Typical faults:
Loss of performance, flat spot on acceleration or engine in limp mode
The turbocharger is noisy or emits whistles
Exhaust smoke, high oil consumption

The turbocharger IVECO OE code 504269261 is a heavy-duty turbo for commercial vehicles, used on diesel Cursor 10 9.5-liter engines fitted to IVECO trucks and buses (especially the Stralis Euro 4 range). It is a Holset-manufactured turbocharger, part of the HE500VG / HE531V family, with variable geometry control to ensure high torque at low revs and stable power under the severe operating conditions typical of heavy transport.

The unit is used on engines with typical power between about 440 and 460 hp, with EDC electronic management and paired with EGR systems and exhaust aftertreatment depending on the vehicle configuration.

Technical specifications

• Manufacturer: Holset (Cummins Turbo Technologies), original equipment for Cursor 10 engines.
• Turbo family: HE500VG / HE531V variable geometry.
• Type of boost: exhaust gas turbocharger with VGT (Variable Geometry Turbine) using a movable-vane ring on the turbine side.
• Target engine: Cursor 10, 9.5 L displacement, engine codes F3A / F3AE3681, common rail diesel fuel injection.
• Lubrication: pressurized engine oil supply with gravity return; typically lacks a dedicated water cooling circuit, as is common for Holset heavy-duty turbos.

DIPA can intervene to overhaul these components thanks to its experience and expertise.

Functions

• Generates the boost pressure required by the Cursor 10 engine to reach nominal powers of 440–460 hp while maintaining high efficiency even under continuous load conditions.
• Reduces turbo lag at low revs thanks to variable geometry: closing the turbine-side vanes increases gas velocity and advances turbo response.
• Limits exhaust backpressure at high load and speed by opening the geometry to avoid excessive temperature and pressure in the manifolds.
• Works with the EDC engine control unit to manage emissions and protection strategies, modulating boost pressure based on manifold pressure sensors, air temperature, engine rpm and VGT actuator position.

Model applications

• IVECO Stralis

Common faults

• Loss of performance, hesitation on acceleration or engine in recovery mode.
• The turbocharger is noisy or emits whistling.
• Exhaust smoke, high oil consumption.

Final conclusions

The turbocharger IVECO OE 504269261 is the reference turbo for the Euro 4 road-going Cursor 10 engine in the 440–460 hp range, manufactured by Holset in the HE500VG/HE531V family with variable geometry. Its correct operation is central to delivering torque and power on heavy-duty Stralis vehicles and on buses equipped with Cursor 10, as well as for compliance with emissions regulations.

DIPA has a wide range of spare parts dedicated to the truck sector, construction vehicles and industrial equipment. Not only that: it offers refurbished components with like-new performance allowing savings on replacement while contributing to environmental protection through the circular economy. If the part you need is not available, don't worry: DIPA can overhaul your part "on demand", restoring full functionality and safety in a short time.