BMW E90 LCI F10 320d 520d N47N Turbocharger Lower Part Turbo Charger 8519475

The BMW E90 LCI F10 320d 520d N47N Turbocharger Lower Part 8519475 is a genuine BMW turbocharger component designed for use in the N47N units in the 3 Series E90 LCI and 5 Series F10 models with 320d and 520d engines. This used turbocharger lower part allows for a cost-effective, yet technically correct, turbocharger repair without the need to replace the entire turbine.

Specifications and technical data

• SKU: 8519475-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8519475
• Substitutable numbers: 8519475, 11658519475
• Category: Turbos & Parts

Purpose and role in the charging system

The lower section of the turbocharger in the N47N engine is responsible for proper exhaust routing and stable seating of key rotor and housing components. In the BMW E90 LCI 320d and F10 520d, it significantly impacts:

• maintaining the correct boost pressure throughout the full rpm range,
• efficient cooperation with the exhaust system and engine control,
• reduced energy losses and correct torque characteristics.

Replacing just the lower section of the turbocharger is a beneficial solution when the housing or lower section of the assembly has been damaged and the remaining turbine components remain functional.

Original BMW origin and compatibility

This lower turbocharger assembly is sourced from BMW's OE line, ensuring factory-standard build and fit. This ensures proper integration with the rest of the N47N engine's turbocharger components, requiring no modifications or adaptations.

Original origin ensures:

• compatibility with factory mounting points in BMW E90 LCI 320d and F10 520d,
• proper exhaust flow geometry,
• predictable behavior of the turbine after installation and easier diagnostics in the future.

Used condition - practical benefits

The part is offered in used condition, significantly reducing repair costs compared to purchasing a new turbocharger assembly. With proper inspection prior to installation, the lower turbine section can still provide:

• stable operation of the charging system in everyday use,
• proper tightness after using new seals and mounting elements,
• a good base for possible regeneration of the entire turbine assembly.

Used condition is particularly attractive to users who are looking for a reasonable compromise between the cost of repair and maintaining the original BMW specification.

Why Choose a BMW OE Turbocharger Lower Part?

Choosing the original lower part of the turbocharger for the BMW E90 LCI 320d and F10 520d is a solution that:

• minimizes the risk of fit problems compared to substitutes of unknown origin,
• makes the mechanic's work easier thanks to factory dimensions and mounting points,
• allows you to maintain the engine's operating characteristics in line with the manufacturer's assumptions.

For workshops specializing in the BMW brand, this is a practical way to quickly and technically correct repair of the supercharging system in the popular N47N units.

Related Drivetrain Components and Technical Knowledge

When working on a turbocharger, it's worth paying attention to the overall condition of the drivetrain – from the engine's condition, through the intake seal, to the operation of the differential and drive axle. Technical materials on diagnostics and purchasing used drivetrain components can be helpful. Practical tips can be found in the guide to used differentials, sensors, and drivetrains , which covers, among other things, wear assessment and common errors when selecting parts.

Other BMW turbochargers and parts

If you are also looking for other turbocharger components and parts dedicated to this brand, check out our offer for turbochargers and parts for BMW , where you will find a wide selection of turbocharger components adapted to various models and generations.