Mini Cooper R56 BMW E46 Ignition Coil SET X4 N15 S54 Petrol Engine 7571643

Mini Cooper R56 BMW E46 Ignition Coil SET X4 N15 S54 Petrol Engine is a set of factory ignition system components designed for BMW and Mini petrol engines. The set of four ignition coils allows for a consistent, technically correct replacement across the entire cylinder bank, which promotes stable engine operation and reduces the risk of uneven spark. This solution is particularly beneficial when servicing N15 and S54 engines, where precise cooperation of all ignition components is essential.

Specifications and technical data

• SKU: 7571643-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7571643
• Substitutable numbers: 12138616153, 8616153, 12137594596, 12137562744, 12131712219, 12137594937, 12137594938, 12130390064, 7594596, 7562744, 1712219, 7594937, 7594938, 0390064, 12137571643, 12130148594, 12137551049, 7551049, 0148594, 7571643, 12138657273, 8657273, 12135A06753, 5A06753, 12137550012, 7550012
• Fuel type: Petrol
• Part type: Ignition Coil
• Category: Ignition Coils

Purpose and compatibility

The presented set includes four ignition coils dedicated to petrol engines used in BMW and Mini vehicles, including popular configurations known from the Mini Cooper R56 and BMW E46 series models. Using a set from the same production series promotes uniform ignition timing across all cylinders, which translates into engine smoothness and predictable throttle response.

These components comply with the vehicle manufacturer's requirements, and their design is adapted to the specifics of N15 and S54 engines, where rapid voltage rise and repeatability of spark parameters at higher RPMs are crucial. As a result, the set will perform well in both daily driving and more dynamic driving styles.

Technical characteristics and role in the ignition system

The coils in this set operate in the petrol engine's ignition system, where they are responsible for transforming voltage from the vehicle's electrical system into the high voltage required to generate a spark at the spark plug. In N15 and S54 engines, each coil serves an individual cylinder, which is why replacing the set of four allows for maintaining consistent electrical parameters throughout the entire system.

Key benefits of using this set include:

• smoother engine operation across the entire RPM range,
• stable cold and warm starts,
• reduction of misfires resulting from differences in the condition of individual coils,
• better utilization of the potential of BMW and Mini petrol units.

The set of four coils also facilitates service – a mechanic can replace all components in one step, which reduces the risk of a recurring fault related to a single, weaker coil.

Condition, origin, and advantages of choosing OEM parts

The offered set comes from the BMW group and is an OEM-class component, which means it maintains factory design parameters and proper fitment to the cylinder head and wiring harness. As a used part, the set has been selected for its suitability for further use, allowing you to combine reasonable costs with the preservation of original technical specifications.

Choosing original ignition coils from dismantling is often more beneficial than installing cheap replacements with uncertain parameters. The stable electrical and mechanical properties of OEM components promote longer spark plug life and reduce the risk of interference in the engine control unit's operation. For users who want to learn more about the cost-effectiveness of using factory parts from dismantling, the article on reducing repair costs using original used components may be helpful.

Practical installation and operating tips

When replacing a set of ignition coils in a petrol engine, it is worth ensuring that the sockets in the cylinder head are clean and that the wiring harness is properly routed to avoid cable tension. It is also recommended to check the condition of the spark plugs – combining new or efficient spark plugs with evenly operating coils allows you to fully utilize the potential of the ignition system.

In the case of N15 and S54 units, it is particularly important to maintain the correct installation sequence and ensure proper seating of the coils on the spark plugs, which minimizes the risk of arcing and interference. Regular computer diagnostics after replacement (reading error codes, analyzing ignition corrections) allows for quick confirmation of the set's proper operation.

Expanding BMW ignition system service

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional coils, ignition control modules, or related high-voltage components, check the available parts in the BMW Ignition Coils category.