Turbocharger 7823202B03 11657823202 7823202G07

The turbocharger model 7823202B03 / 11657823202 / 7823202G07 is a high-performance, direct replacement turbo 

specifically designed for the BMW 330d series equipped with the advanced N57TU Euro 6 diesel engine. 

This turbocharger plays a vital role in enhancing the engine's power, torque, fuel efficiency, and emissions compliance, 

making it an essential component for both original equipment and aftermarket upgrade purposes.

1. Application Overview

This turbocharger is engineered for the following BMW models:

• BMW 330d F30 (Sedan)

• BMW 330d F31 (Touring)

• BMW 330d F34 (Gran Turismo)

These vehicles are powered by the N57TU (Technically Updated) 3.0-liter inline-six common rail diesel engine. 

The N57TU is a highly efficient and powerful engine that meets Euro 6 emission standards, making use of advanced 

turbocharging systems to deliver dynamic performance without compromising environmental compliance.

2. OEM Part Numbers and Compatibility

This turbocharger is associated with several OEM reference numbers, including:

• 7823202B03

• 11657823202

• 7823202G07

These part numbers ensure compatibility with the factory specifications of the N57TU engine and guarantee seamless integration 

with the original exhaust and intake systems, as well as the ECU and emission control systems.

3. Technical Specifications

• Turbo Type: Single VGT (Variable Geometry Turbocharger)

• Actuation System: Electronic actuator for precise boost control

• Compressor Wheel: High-performance aluminum alloy, CNC machined

• Turbine Wheel: Heat-resistant Inconel alloy

• Bearing System: Journal bearing or upgraded with improved durability (varies by variant)

• Cooling System: Oil and water-cooled

• Boost Pressure: Factory-calibrated for optimal performance with N57TU parameters

The variable geometry technology allows the turbocharger to adjust the vanes in response to engine load, ther

by reducing

 turbo lag at low RPM and maximizing airflow at higher speeds. This results in smoother acceleration, increased low-end torque, and improved fuel economy.

4. Performance and Efficiency

The BMW 330d with the N57TU engine delivers impressive performance figures:

• Power Output: Up to 258 horsepower (190 kW)

• Torque: Around 560 Nm (413 lb-ft)

• 0–100 km/h (0–62 mph): Approximately 5.4–5.6 seconds (depending on the model variant)

The turbocharger is the key component that enables the engine to reach such performance benchmarks while maintaining 

low emissions and high fuel efficiency. Its efficient air compression and rapid response characteristics support 

the combustion process, allowing the engine to make the most of each drop of fuel.

5. Design Features and Durability

BMW’s original turbochargers are designed with precision and longevity in mind. The 7823202B03 / 11657823202 / 7823202G07 turbo incorporates several design features:

• Balanced Shaft Assembly to ensure smooth operation and reduced vibration

• Robust Housing Construction that withstands high temperatures and pressure

• Corrosion-Resistant Coating on turbine housing to ensure long-term durability

• Optimized Oil Channels for consistent lubrication and cooling

These characteristics help extend the service life of the turbocharger, minimize maintenance needs, and provide reliability under demanding driving conditions.

6. Emission Compliance

With Euro 6 regulations requiring stricter limits on NOx and particulate emissions, the turbocharger plays a crucial role by:

• Enhancing exhaust gas recirculation (EGR) performance

• Supporting diesel particulate filter (DPF) operation through optimized exhaust flow

• Reducing turbo lag and enhancing fuel atomization, thereby improving combustion efficiency

The electronic actuator also ensures that the turbo operates precisely according to ECU commands, helping meet regulatory limits without sacrificing performance.

7. Installation and Replacement

The turbocharger is designed as a direct-fit replacement for the OEM unit, meaning no modifications are needed for installation. 

The component comes fully assembled and balanced, often including:

• Pre-installed actuator

• Mounting gaskets

• Required fittings or studs (depending on supplier)

It is recommended to replace the oil feed line, check for intercooler cleanliness, and ensure no oil contamination during installation to prevent premature failure.

8. Aftermarket vs. OEM Comparison

While OEM turbos like this one offer assured compatibility and factory performance, there are high-quality aftermarket alternatives available for users seeking:

• Cost-effective replacement options

• Slightly improved performance through upgraded internals (e.g., billet compressor wheels)

• Remanufactured units with quality assurance

Whether choosing an original or remanufactured unit, it is critical to verify the part numbers, vehicle model, and engine type to ensure compatibility.

9. Maintenance Tips

To maximize the lifespan of the turbocharger:

• Always allow the engine to warm up before aggressive driving

• Use high-quality synthetic engine oil and change it regularly

• Let the engine idle for 30–60 seconds before shutdown to prevent oil coking

• Avoid abrupt acceleration when the engine is cold

Proper care will ensure reliable boost performance and extended service life of the turbo system.

Conclusion

The turbocharger 7823202B03 / 11657823202 / 7823202G07 is a precision-engineered component that plays a vital role in the performance 

and efficiency of the BMW 330d models equipped with the N57TU Euro 6 diesel engine. Its advanced VGT technology, durable materials, 

and seamless integration with BMW’s emission systems make it an ideal choice for repair, replacement, or performance restoration. 

Whether you're an automotive professional, performance enthusiast, or a BMW owner, choosing a high-quality turbocharger ensures 

the continued excellence and reliability of your vehicle.