Turbocharger 717478-0001 7794140D 750431

GT1749V Turbocharger 717478-0001 / 7794140D / 750431 for BMW 2.0D Engines – High-Performance Replacement for 320D, 520D, and X3 Models

The GT1749V Turbocharger, with part numbers 717478-0001, 7794140D, and 750431, is a high-quality turbo replacement specifically engineered for a range of BMW diesel vehicles. 

This turbocharger is designed for BMW’s 2.0-liter diesel engines producing 110kW (150HP), and is commonly found in the BMW 320D E46, 520D, and X3 E83 / E83N models.

Compatible BMW Models:

BMW 3 Series Compact 320D (E46)

BMW 5 Series 520D

BMW X3 (E83 / E83N)

Engine Code: M47D20

Power Output: 110 kW / 150 HP

Engine Capacity: 2.0L Diesel

Performance and Engineering

This GT1749V turbocharger features Variable Geometry Technology (VGT), which allows for precise control over exhaust flow into the turbine housing. 

This results in significantly improved engine response across the entire RPM range. Unlike traditional fixed-geometry turbos, a VGT adjusts the vanes depending on engine load, providing:

Quicker spool-up at low RPM

Reduced turbo lag

Greater torque and power output

Improved fuel economy

By maintaining optimal boost pressure throughout different driving conditions, the GT1749V turbo ensures smoother acceleration, 

better throttle response, and improved overall engine efficiency.

Quality and Materials

The turbocharger is manufactured using high-strength, heat-resistant materials capable of withstanding extreme exhaust 

gas temperatures and high pressure levels found in turbocharged diesel engines. Key components include:

Durable turbine and compressor wheels with precision-balanced performance

Heavy-duty bearings for long-lasting operation

Stainless steel turbine housing for enhanced thermal resistance

Each unit is fully balanced and tested on a dynamic balancing machine before shipment to ensure:

Noise-free operation

Minimal vibration

Extended turbo life

Easy Installation and OEM Compatibility

This turbocharger is a direct replacement for the original units with OE numbers:

717478-0001

7794140D

750431

It matches original mounting points, oil lines, and actuator settings, which makes installation straightforward for any professional technician or experienced DIYer. 

No additional modifications are required.

OE and Cross Reference Numbers:

BMW OE Numbers: 7794140D, 750431

Turbo Manufacturer Reference: 717478-0001

Other Cross References: 11652248906, 11652247905

Applications and Benefits

Whether you're replacing a worn-out turbocharger or seeking a performance refresh, this GT1749V turbo is ideal for:

Restoring factory performance

Improving low-end torque and drivability

Reducing emissions and increasing combustion efficiency

Enhancing fuel economy under various load conditions

BMW diesel engines are known for their balance of performance and efficiency. This turbo helps maintain that standard, 

making it an excellent choice for daily drivers, long-distance commuters, and even fleet vehicles that demand reliability and consistency.

Warranty and Support

This GT1749V turbocharger comes with a 12-month warranty against manufacturing defects. Each unit is:

Tested for boost performance, oil leakage, and shaft play

Packaged with protective material to avoid damage during shipping

Supported with technical assistance for troubleshooting and installation guidance

Final Thoughts

The GT1749V 717478-0001 / 7794140D / 750431 turbocharger is a top-tier replacement for BMW 2.0D diesel engines, 

delivering OEM-level performance with improved durability and reliability. With its VGT design, robust construction, and plug-and-play compatibility, 

it's an excellent investment for restoring or upgrading your vehicle's turbocharging system.

Whether you're servicing a BMW 320D, 520D, or X3 with the M47D20 engine, this turbocharger brings your diesel engine back to life 

— giving you the power, responsiveness, and efficiency BMW owners expect.