Mini Cooper S R55 R56 R57 N14 1.6 Petrol Fuel Injector 7528351 0261500029

MINI Cooper S R55 R56 R57 Injector N14 is an original gasoline injector nozzle designed for the N14 engine in sporty versions of the MINI Cooper S. This part comes from disassembly, allowing for an economical yet technically sound repair of your car's fuel system.

Specifications and technical data

• SKU: 7528351
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7528351
• Substitutable numbers: 13537528351, 7528351, 0261500029, 0 261 500 029
• Fuel type: Petrol
• Category: Fuel Injectors

Injector Purpose and Function

The offered MINI injector nozzle operates within the gasoline fuel system of the N14 engine, used in the R55, R56, and R57 generations of MINI Cooper S models. The injector's task is to precisely dose fuel into the combustion chamber, which directly impacts the engine's smooth operation, performance, and idle stability.

The gasoline injector in this engine works in conjunction with the engine control system, which determines injection timing and quantity based on sensor data. A functional component ensures:

• correct fuel-air mixture across the full range of loads,
• smooth engine operation without jerking or misfires,
• stable combustion parameters, reducing the risk of mechanical engine damage.

Benefits of Using an Original Injector Nozzle

Choosing an original, disassembled injector for the MINI Cooper S N14 is a solution that combines technical correctness with a reasonable budget. Compared to low-quality aftermarket alternatives, an OEM part ensures:

• factory fit to the cylinder head and fuel rail, without the need for modifications,
• consistent fuel flow characteristics matching the engine control unit maps,
• stable operating parameters under higher loads, typical for turbocharged engines.

This makes restoring the injector system's functionality predictable, and diagnosing potential further issues – simpler and more reliable.

Application in the N14 Gasoline Engine

The N14 engine is a turbocharged gasoline unit where the fuel system operates under higher thermal and pressure loads than in simple naturally aspirated designs. A functional gasoline injector is crucial for:

• maintaining the correct fuel dose under boost,
• limiting knock combustion and overheating of the combustion chamber,
• proper operation of the catalytic converter and other exhaust system components.

Replacing a worn injector nozzle with a functional part from the same engine application allows for the restoration of the engine's factory operating parameters without altering the control unit software.

Condition, Installation, and Practical Aspects

The injector is in used condition, which is typical for parts sourced from vehicle disassembly. Before installation, it is recommended to:

• check for leaks and spray pattern on a diagnostic bench,
• replace seals according to the manufacturer's procedure,
• clean the seat in the cylinder head and inspect the fuel rail.

A correctly installed injector, connected to a properly functioning fuel pump and ignition system, helps minimize the risk of further engine problems, such as uneven idling, increased fuel consumption, or the smell of unburnt fuel from the exhaust.

Diagnostics and Additional Knowledge

Although this part is for a gasoline engine, the symptoms of worn injectors – such as starting difficulties, power loss, or smoking – are partially similar to those found in diesel engines. If you want to better understand how to identify fuel system problems, it is worth familiarizing yourself with the educational material: diesel injector faults – symptoms, consequences, and diagnostics. Knowledge in this area helps to detect irregularities more quickly, even in gasoline engines.

Other MINI Injector Nozzles

If you are looking for other MINI injector nozzles for different engine versions or generations of this model, check out our dedicated category: MINI injector nozzles. This will allow you to easily compare available variants and select the part appropriate for your specific engine code and vehicle year.

For users interested in longer and trouble-free operation of disassembled components, we have also prepared a practical guide: how to extend the lifespan of used car parts. You will find tips on maintenance, installation, and operation that help maximize the potential of used parts, including injectors.