Mini Cooper S JCW R56 R57 211HP Complete Engine N14 N14B16C 21k miles, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

Mini Cooper S JCW R56 R57 211HP Complete Engine N14 N14B16C 21k miles, WARRANTY is a complete powertrain from the N14 family, designed for the sporty Mini Cooper S John Cooper Works versions. This four-cylinder petrol unit provides dynamic performance, and its low mileage makes it an attractive base for a professional engine replacement or advanced powertrain upgrade.

Specifications and technical data

• SKU: 2158712-5
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 2158712
• Substitutable numbers: 2158712, 11002158712, 0445403, 11000445403, 0495044, 11000495044
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Engine code: N14B16C
• Mileage: 21 000

Purpose and characteristics of the unit

The presented engine belongs to the Engines category and was designed for demanding drivers of the R56 and R57 generation Mini Cooper S JCW models. The four-cylinder, petrol-powered design ensures a distinctly sporty character, quick revving, and predictable throttle response, which is particularly important in cars intended for track use and dynamic road driving.

The N14 family unit with the N14B16C designation is a popular choice for workshops specializing in the Mini brand due to its ease of service, wide availability of accessories, and the possibility of configuration for various power levels within factory specifications.

Benefits of using a complete engine

Choosing a complete engine for the Mini Cooper S JCW significantly simplifies the repair or engine replacement process. Instead of time-consuming regeneration of an old unit, the workshop can perform an efficient swap, reducing the risk of component incompatibility and shortening vehicle downtime.

Key advantages of this solution include:

• consistency of components within a single engine code,
• easier diagnostics and control system configuration,
• possibility of planning further mechanical modifications on a uniform base,
• cost reduction compared to purchasing a brand-new unit.

Additionally, a used petrol engine with low mileage represents a reasonable compromise between durability and budget, especially in cars driven dynamically, where both performance and investment profitability matter.

Professional application in service and amateur motorsport

The N14B16C engine is suitable for both professional workshops providing comprehensive Mini service and amateur motorsport projects – from track days to time attacks. The unit works well with factory drivetrain systems and accessories, which facilitates compliance with the vehicle's original specifications.

In practice, this means that the workshop can:

• restore the factory operating parameters of the powertrain,
• prepare the car for further modifications (e.g., ECU software tuning),
• maintain predictable vehicle behavior on the road and track.

This approach is particularly beneficial for users who expect repeatable service results and stable engine operating conditions in the long term.

Selection by engine code and OEM numbers

When selecting a powertrain for a Mini, it is crucial to verify compatibility using the engine code and manufacturer's catalog numbers. This helps avoid problems with the compatibility of accessories, wiring harnesses, or control units. In the case of this unit, using the correct engine code allows for precise matching to a specific vehicle equipment version and model year.

To better understand the process of selecting a used engine, the differences between individual variants, and the real cost benefits, it is worth checking out our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. The article explains, among other things, the principles of selection by VIN and OEM, and presents practical examples from workshops.

Mini engines – expansion and powertrain modernization

If you are planning a comprehensive repair or modernization of the engine area in your Mini and need other elements from the same group, such as blocks, cylinder heads, or complete powertrains, check out the available parts in the Mini Engines category.

This allows you to build a coherent package of components – from the powertrain and accessories to accompanying elements – which facilitates service, improves system predictability, and allows for better planning of future car modifications.