Turbocharger BMW F10 M5 F13 M6 S63N Petrol Engine 1-4 Cyl Bi-Turbo 7846918

The BMW F10 M5 F13 M6 S63N Turbocharger 1-4 cyl Bi-Turbo is an original turbocharger and parts component designed for BMW petrol engines with the S63N unit. This used turbocharger provides a functional solution for demanding users who expect a proven OEM part with stable performance parameters.

Specifications and technical data

• SKU: 7846918
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7846918
• Substitutable numbers: 7846918, 11657846918
• Fuel type: Petrol
• Category: Turbos & Parts

Purpose and technical characteristics

This turbocharger covers cylinders 1–4 in the Bi-Turbo system of the S63N engine, used in the BMW F10 M5 and F13 M6 models. It is a component of the supercharging system designed to work with the petrol engine, ensuring adequate boost pressure and proper cylinder charging across a wide load range.

The S63N's Bi-Turbo design allows for a more consistent torque buildup, faster throttle response, and improved high-rpm character. As an OEM part, this turbocharger is designed to fit the factory exhaust manifold, lubrication, and cooling systems, simplifying installation and reducing the risk of operational issues.

Application in BMW sports models

The S63N engine is a high-revving petrol engine used in BMW's M sports models, where boost stability is crucial to performance. A turbocharger for cylinders 1-4 works in tandem with a twin unit for the remaining cylinders, creating a cohesive Bi-Turbo system optimized for:

• dynamic acceleration across the entire speed range,
• maintaining high unit power while maintaining factory parameters,
• precise control of the boost pressure by the engine control unit.

By maintaining the original manufacturer's specifications, the turbocharger allows the vehicle's stock performance to be restored after the failure or wear of the previous component, without the need to modify the software or hardware.

Condition, origin and benefits of choosing a used part

The turbocharger offered is used, meaning it comes from a disassembly and has previously been used in a vehicle. Such components are often chosen by users seeking a compromise between cost and maintaining original BMW specifications. The OEM part ensures proper fitment to the exhaust, intake, and control systems, minimizing the risk of compatibility issues.

Choosing a used turbocharger is also beneficial from the perspective of eco-tuning and reducing your carbon footprint – reusing functional components reduces the need for new parts. If you want to better understand how to consciously combine performance with environmental care, check out the article "Eco-tuning in practice: how to increase performance while reducing your carbon footprint with recycled parts ."

Why choose a BMW turbocharger for the S63N petrol engine?

A dedicated turbocharger for cylinders 1-4 in the S63N Bi-Turbo system provides a number of practical benefits:

• Factory fit – design compliant with BMW requirements, without the need for mechanical modifications.
• Consistent operation with the engine electronics – correct cooperation with the standard controller and boost system sensors.
• Appropriate characteristics for a petrol engine – adapted to the high revs and loads typical of the S63N engine.
• Possibility of restoring stock performance – especially important after the failure of one of the turbochargers in the Bi-Turbo system.

A charging system configured in this way allows the engine to maintain the correct operating parameters, which translates into stability, predictable gas response and operational safety during dynamic driving.

Compatibility within the BMW turbocharger category

If you are also looking for other turbochargers for BMW – for example, for the other side of the Bi-Turbo system or for other models of this brand – check out our dedicated category of turbochargers and parts for BMW , where you will find a wide selection of turbocharger components adapted to various engine units.