BMW F80 M3 F82 F83 M4 S55 Petrol Engine Turbocharger Cylinders 4-6 7850279

The BMW F80 M3 F82 F83 M4 S55 turbocharger is an original equipment turbocharger and parts component designed for the S55 engine in BMW's sporty gasoline models. A used OEM turbocharger is a sensible choice for drivers who expect a factory fit, predictable performance, and a favorable price-to-performance ratio.

Specifications and technical data

• SKU: 7850279-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7850279
• Substitutable numbers: 7850279, 11657850279
• Fuel type: Petrol
• Category: Turbos & Parts

Purpose and technical characteristics

The BMW F80 M3 F82 F83 M4 S55 Turbocharger is designed for the S55 petrol engine with cylinders 4 to 6. It is a factory-fitted component of the turbocharging system, providing adequate boost pressure, stable torque characteristics, and predictable throttle response throughout the entire rev range.

As an OEM part, the turbocharger retains its original geometry, mounting points, and oil and cooling ports, making it easy to replace a worn component. The design is designed to withstand the high thermal and dynamic loads typical of the S55 engine, which is crucial for intense, dynamic driving.

Benefits of using an original BMW turbocharger

Choosing an original aftermarket turbocharger for the S55 engine in M3/M4 models brings a number of practical benefits:

• Factory fit – maintaining the original engine operating characteristics without the need to modify the accessories.
• Stable boost parameters – correct cooperation with the standard engine controller and fuel system.
• Consistency with other components – compatibility with the factory exhaust, intake and cooling systems.
• Trouble-free installation – original mounting points and connections are retained, reducing service time.

This solution is particularly beneficial when replacing a worn or damaged turbocharger, when the priority is to restore stock performance and reliability without the cost of purchasing a new component.

Status, origin and practical application

The turbocharger offered is in used condition, meaning it was dismantled from a BMW vehicle and has been previously used. This type of component is a good choice for users who:

• want to restore the efficiency of the supercharging system in their M3 or M4 at a controlled cost,
• are looking for an original component to repair after a turbocharger failure,
• they prefer factory solutions instead of substitutes of uncertain origin.

Due to the nature of the used part, before installation it is recommended to carry out a standard inspection at a specialized service center and use new consumables (seals, oil, filters) in accordance with the manufacturer's procedures.

Why Choose a Used OEM Turbocharger?

For components like the turbocharger for the S55 engine, a used OEM component often offers a reasonable compromise between cost and durability. The original design is engineered for specific loads and operating conditions, resulting in predictable engine performance after replacement.

If you want to better understand how to safely select parts from disassembly and dispel doubts about the quality of such components, an article on our blog may be helpful: used car parts – myths and facts worth knowing before buying .

Related Products and Technical Knowledge

If you're looking for other turbochargers and parts for BMW, check out our dedicated category: Turbochargers and Parts for BMW . There you'll find a wide selection of turbocharger components tailored to various BMW models.

In the context of performance and precise handling, the condition of the steering system is also crucial. To better understand its operation, typical signs of wear, and the importance of individual components, you can use the guide: Steering and Power Assistance – How Does It Work and What Breaks Down?