BMW 730D E90 3.0 (05–07) Part Number 758351 Turbocharger — The Ultimate Hybrid Upgrade
The BMW 730d powered by the renowned 3.0‑litre M57N2 straight‑six diesel engine is known for its smooth torque delivery, refined cruising and strong reliability. But like any diesel performance platform, it hides huge untapped potential. For owners looking to restore lost performance, increase power or improve drivability, the BMW 730D E90 3.0 (05–07) Part Number 758351 Turbocharger hybrid upgrade offers one of the most effective and reliable enhancements available.
Built around the OEM turbo reference 758351, this unit is engineered as a direct‑fit replacement that retains factory compatibility while dramatically improving airflow, boost response and long‑term durability. Whether your original turbo is worn or you’re planning a performance‑focused remap, this hybrid turbocharger transforms the way the 730d delivers power.
What Is the 758351 Hybrid Turbocharger?
A hybrid turbocharger takes the standard factory turbo and upgrades internal components—such as the compressor wheel, turbine wheel and rotating assembly—to increase both air volume and efficiency. While the housing remains compatible with OEM fitment, the performance potential increases substantially.
In the case of the BMW 730D E90 3.0 (05–07) Part Number 758351 Turbocharger, the hybrid specification has been developed specifically for the M57N2 diesel platform. This means owners benefit from improved torque delivery, quicker spool, stronger high‑boost operation and superior reliability under demanding conditions.
Stage 1 and Stage 2: Performance Options for Every Build
This hybrid turbo is available in two configurations to suit different performance goals and supporting modifications.
Stage 1 Hybrid Turbocharger Features
- Oversized GT25 aluminium billet hi‑flow compressor wheel
- Precision‑machined and polished compressor cover for optimized airflow
- Uprated 360‑degree thrust bearing for increased durability
- Twin‑step gapped performance shaft piston ring
- Fully VSR balanced for smooth, efficient operation
- Designed, machined and assembled in‑house to track specification
The Stage 1 setup is ideal for daily drivers looking for a healthy performance increase without compromising spool or low‑rpm usability. With estimated outputs of 330–350 bhp (depending on supporting modifications), it delivers a responsive, torque‑rich driving experience.
Stage 2 Hybrid Turbocharger Features
- Oversized GT25 billet hi‑flow compressor wheel with extended tips
- Fully reworked, high‑flow compressor cover
- Oversized lightweight turbine wheel for maximum exhaust flow
- Upgraded 360‑degree thrust bearing
- Twin‑step gapped piston ring for boost stability
- Overhauled electronic actuator
- VSR balanced and track‑calibrated assembly
Stage 2 is the choice for enthusiasts aiming for 400–440 bhp with the appropriate hardware, including intercooler, exhaust system and quality remap. It offers greater top‑end power and sustained high‑boost capability while maintaining strong response.
Why Upgrade to This Hybrid Turbo for Your BMW 730d?
Owners of the 2005–2007 BMW 730d often experience declining turbo efficiency as their original 758351 units age. Boost leaks, worn bearings and reduced spool speed can make the car feel sluggish. Replacing the factory turbo with a hybrid upgrade solves these issues while delivering significant performance gains.
- Direct‑fit replacement—no fabrication or modification needed
- Stronger mid‑range acceleration and improved highway overtaking power
- Better airflow and efficiency for tuned engines
- Enhanced reliability when running higher boost pressures
- Suitable for both daily use and performance‑focused builds
- Designed and balanced in‑house for consistent, long‑lasting performance
Whether you’re refreshing a tired turbocharger or building a responsive diesel performance setup, the BMW 730D E90 3.0 (05–07) Part Number 758351 Turbocharger hybrid upgrade delivers proven results.
Real‑World Benefits for BMW 7 Series Owners
Many BMW 7 Series 730d owners choose this hybrid turbo because it offers immediate improvements in drivability. With faster spool and increased low‑rpm torque, the car feels more eager around town and more confident under motorway acceleration. Those pairing the turbo with a remap notice smoother power delivery and a broader torque band.
For long‑distance drivers, the improved efficiency and reduced turbo strain can contribute to better thermal stability and potentially longer component life. Enthusiasts who tow, travel frequently or simply enjoy strong diesel performance will appreciate the hybrid system’s ability to handle sustained load without fade.
Reconditioned and Exchange Options
Cost‑effective solutions are available for those looking to keep expenses manageable. Reconditioned hybrid units for the 758351 turbo fall under Band 2 and are supplied on an exchange basis. This allows owners to benefit from upgraded performance while returning their old turbo for rebuild.
More information on exchange units can be found through the supplier’s reconditioned turbo program.
Professional Fitting and Aftercare
Correct installation is crucial for ensuring reliability and peak performance. For customers wanting expert fitting, MJ Modifications in Warwickshire provides professional installation and aftercare support. Their team has hands‑on experience with the M57N2 platform and hybrid turbo setups, making them an ideal partner for supply‑and‑fit packages.
For fitting enquiries, you can contact: info@mjmodifications.co.uk
Compatibility Overview
This hybrid turbocharger is designed exclusively for the BMW 7 Series 730d 3.0 diesel model years 2005–2007 equipped with the M57N2 engine. It replaces OEM turbo reference 758351 and maintains full compatibility with factory mounting points, actuator systems and oil/water connections.
Power figures vary depending on engine condition, supporting hardware and the quality of your ECU calibration. For the best results, pairing the hybrid turbo with an upgraded intercooler, freer‑flowing exhaust and professional remap is recommended.