Throttle Body Housing Mini Cooper R55 R56 R57 N12 N16 Throttle Cover Petrol

MINI R55 R56 R57 N12 N16 Petrol Throttle Body 7557222 is an original intake system component designed for N12 and N16 series petrol engines in MINI R55, R56, and R57 models. A used throttle body from this series ensures a factory fit, stable engine operation, and predictable accelerator pedal response. This is a solution for users who expect a proven OEM part instead of uncertain aftermarket alternatives.

Specifications and technical data

• SKU: 7574379
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7557222
• Substitutable numbers: 13547557222, 7557222, 13548624190, 8624190, 13547576697, 7576697, 13547604919, 7604919, 13547574379, 7574379
• Fuel type: Petrol
• Category: Throttle Bodies

Purpose and Role in the Intake System

The throttle body in MINI petrol engines is responsible for precisely dosing the amount of air drawn into the intake manifold. In N12 and N16 units, it is a key component that works with the electronic engine control unit, influencing:

• idle stability,
• smooth acceleration across the entire RPM range,
• response to sudden throttle application or release,
• maintenance of the correct fuel-air mixture composition.

A well-chosen throttle body for MINI allows for the restoration of proper engine running characteristics, reducing jerking and unstable idling that often occur with worn or dirty intake components.

Benefits of Using an Original MINI Throttle Body

Choosing an original throttle body from the Throttle Bodies category primarily guarantees compatibility with the factory electronics and engine control unit software. In practice, this means:

• no issues with adaptation and communication with the ECU,
• preservation of the engine's original operating parameters,
• reduced risk of errors appearing in the control unit's memory,
• consistency with other components of the MINI intake system.

A used OEM part is often a sensible compromise between cost and quality – especially for petrol engines where stable throttle body operation directly impacts driving comfort and vehicle responsiveness.

Application in N12 / N16 Petrol Engines

The presented throttle body is designed to work with petrol units, which is significant in terms of both construction and operating characteristics. In N12 and N16 engines, this component interacts with the throttle position sensors and the mixture control system, therefore its proper functioning translates to:

• easier cold and warm starts,
• reduction of power losses resulting from incorrect air dosing,
• more predictable vehicle behavior in city traffic and during dynamic driving.

For MINI drivers experiencing RPM fluctuations, idle instability, or delayed throttle response, replacing the throttle body with a proven part can be an effective way to restore correct engine operating parameters.

Condition, Fitment, and Installation

The offered throttle body is a used part, sourced from disassembly, which helps maintain the factory geometry and mounting points characteristic of MINI R55, R56, and R57. This allows for installation similar to replacing with a new part – without the need for modifications or adjustments to the system.

Before installation, the standard service procedure is recommended, including checking the intake system for leaks, inspecting the condition of vacuum hoses, and performing throttle body adaptation using an appropriate diagnostic interface. This approach allows for the full utilization of the potential of an original MINI throttle body and minimizes the risk of recurring symptoms related to improper intake operation.

Expanding MINI Intake System Upgrades

If you are planning a comprehensive repair or upgrade of the engine area in your MINI and need other parts from the same group, such as additional throttle bodies, control elements, or complementary intake components, check the available parts in the Mini Throttle Bodies category.

For drivers interested in the broader context of sports car and hot-hatch modernization, including the impact of components like throttle bodies on driving characteristics, an article describing the evolution of one of the most famous models in this segment may be helpful – The Legend of Hot-Hatch: Evolution of the VW Golf GTI from Mk1 to Mk8 – Construction Changes and VW Car Parts.