BMW F20 F30 Mini Cooper R55 R56 R57 S Engine Crankshaft 7561273

BMW F20 F30 Mini Cooper R55 R56 R57 S Engine Crankshaft is an original part from the Crankshafts group, designed for use in BMW F-series and Mini Cooper R-generation engines. This used OEM crankshaft is a solution for workshops and users looking for a technically matched component for professional engine repair, while maintaining factory performance characteristics. Thanks to its precise manufacturing and compatibility with the engine design, this element allows for a stable rebuild of the crank-piston system.

Specifications and technical data

• SKU: 7561273
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561273
• Substitutable numbers: 11217561273, 7561273
• Tire profile: 65535
• Category: Crankshafts

Purpose and compatibility with BMW and Mini engines

The presented crankshaft is dedicated to engines installed in BMW F-series models (e.g., F20, F30) and Mini Cooper R-series (R55, R56, R57 S). This means that its geometry, journal spacing, and the way it interacts with bearings and the flywheel are consistent with the factory requirements of these engines. For a workshop, this means the possibility of carrying out repairs using a component with the parameters specified by the vehicle manufacturer, without the need for adaptation or modification of the engine structure.

Technical characteristics of the crankshaft

The crankshaft is one of the key components of the crank-piston system, responsible for converting the reciprocating motion of the pistons into rotational motion transmitted to the gearbox. In this model, the factory configuration of the main and connecting rod journals is maintained, which enables proper cooperation with stock connecting rods and pistons used in BMW F20, F30, and Mini Cooper R55/R56/R57 S engines. The crankshaft design is engineered for appropriate rigidity, resistance to material fatigue, and stable operation at high rotational speeds typical of modern gasoline and diesel engines in this group.

In assembly practice, it is important that the crankshaft comes from the same design family as the original engine components, which makes it easier to maintain correct operating clearances after grinding or dimensional inspection. For services specializing in the BMW and Mini brands, this is a significant advantage, as it allows for predictable engine behavior after an overhaul.

Application in professional engine regeneration

The used crankshaft with this reference will work particularly well in:

• major overhauls of BMW F20 and F30 engines,
• regeneration of Mini Cooper R55, R56, R57 S engines after seizure or damage to the crank-piston system,
• repairs performed in specialized workshops where compliance with factory specifications is essential.

For the end user, this means the ability to restore engine efficiency while maintaining original performance characteristics, running smoothness, and compatibility with accessories. The original BMW crankshaft is designed for long-term operation, which is why its use in repairs is often preferred over replacements of uncertain origin.

Condition, verification, and practical aspects

The item is offered as a used part, which in workshop practice means the necessity of standard dimensional verification before installation (checking runout, journal diameters, and potential need for grinding). For many services, this is a daily procedure that allows for the safe use of a used component in a regenerated engine. Using an original crankshaft from the same engine family also facilitates the selection of bearings and the maintenance of proper oil pressure in the lubrication system.

The product description includes information about the OEM part number and interchangeable numbers, which makes it easier to match the specific engine version based on service documentation or the VIN. Thanks to this, both the workshop and the informed user can verify compatibility before purchase, minimizing the risk of selecting the wrong part.

Repair expansion and selection of other BMW crankshafts

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 crankshafts for different displacements, power variants, or model generations, check out the available parts in the BMW Crankshafts category.

When selecting used crank-piston system components, it is worth being guided not only by the car model designation but also by the OEM number and interchangeable numbers. A practical guide to online shopping may be helpful, which describes, among other things, strategies for selection by catalog numbers and VIN – you can find it in the article Safe purchase of used car parts online – a step-by-step guide.

Summary

BMW F20 F30 Mini Cooper R55 R56 R57 S Engine Crankshaft is a proposal for workshops and users who want to carry out engine repairs using an original component from the Crankshafts group. The use of this element allows for the preservation of the factory geometry of the crank-piston system, which translates into predictable engine performance parameters after an overhaul. For professional services, it is a solid base for regeneration, and for the vehicle owner – a chance to restore engine efficiency based on a part consistent with the BMW and Mini design.