BMW Mini Cooper R50 R52 W10 Engine Crankshaft Crank Shaft 04777684AA 1485832

BMW Mini Cooper R50 R52 W10 Engine Crankshaft Crank Shaft is an original component from the Crankshafts group, designed for power units used in first-generation Mini models. This used OEM component ensures factory geometry, proper balance, and compliance with factory tolerances, which is crucial for engine durability and stable operation of the crank-piston system. It is a solution for users looking for a technically matched crankshaft for professional engine repair or overhaul in a Mini R50/R52.

Specifications and technical data

• SKU: 7508547
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 1485832
• Substitutable numbers: 11331485832, 1485832, 04777684AA
• Category: Crankshafts

Purpose and fitment for Mini R50/R52

The presented crankshaft has been designed for engines used in Mini R50 and R52 models, which translates into a proper fit for the engine block, main and connecting rod bearings, and the lubrication system. The original design ensures that factory reference points for sensors and mating components are maintained, facilitating installation and subsequent operation without the need for modifications.

By maintaining the specific operating characteristics of the Mini crank system, the crankshaft allows for maintaining proper engine refinement, reducing torsional vibrations, and correctly transferring torque to the rest of the drivetrain.

Construction and technical properties

The crankshaft belongs to the group of highly loaded components, which is why its construction is based on precisely machined main and connecting rod journals, oil channels, and properly shaped counterweights. In the case of Mini R50/R52 units, it is crucial to maintain proper dynamic balance, which affects:

• engine stability across the entire RPM range,
• reduction of loads on main and connecting rod bearings,
• reduction of noise and vibrations transmitted to the body.

The original crankshaft from this series retains the factory geometry of the journals and mating surfaces, which facilitates the selection of bearings and allows for precise setting of operating clearances in accordance with Mini service documentation.

Use in engine repairs and overhauls

A used crankshaft of this type is often chosen during engine overhauls when the existing component has become worn, overheated, or mechanically damaged. In workshop practice, such a component allows for:

• restoring the correct alignment of the crank system,
• restoring proper oil pressure in the bearing zone,
• maintaining compliance with factory Mini engine operating parameters.

For mechanics and users, this means the possibility of performing a repair based on an OEM part, without the need to use replacements with uncertain specifications. This is particularly important in engines where dimensional tolerances and balance quality have a direct impact on the durability of the entire unit.

Benefits of choosing an original Mini crankshaft

Choosing an original crankshaft for the Mini R50/R52 primarily means certainty of fitment to the specific engine configuration and compatibility with other components of the crank-piston system. Compared to random replacements, the OEM component ensures:

• retention of factory balance parameters,
• proper cooperation with connecting rods and pistons,
• the ability to use standard Mini assembly and service procedures.

Thanks to this, an engine overhaul can be carried out in a predictable manner, with a reduced risk of additional vibrations, accelerated bearing wear, or problems with the unit's refinement.

Component condition and practical aspects

The offered crankshaft is a used item, which in practice means that before installation, standard workshop verification is recommended – measuring journal diameters, checking runout, and assessing mating surfaces. This type of procedure allows for selecting the appropriate bearings and deciding on potential reconditioning if required in a specific case.

For Mini R50/R52 users, this is a cost-effective solution while maintaining the high quality of the base OEM part, which is especially important during comprehensive engine overhauls where the total cost of sub-assemblies is significant.

If you are planning a comprehensive repair or upgrade of the engine area in your Mini and need other elements from the same group, such as other shafts, mating elements, or crank system components, check the available parts in the Mini Crankshafts category.

To compare manufacturers' approaches to component durability and the sense of using aftermarket elements in other brands, it is worth reading the article Volkswagen – solidity and reliability. Why are used VW parts a reasonable choice?, which discusses the practical aspects of selecting used components in the context of long-term operation.