Mini Cooper One R55 R56 R57 Engine Petrol N12 Oil Filter Housing Plastic Cover

Mini Cooper One R55 R56 R57 Engine Petrol N12 Oil Filter Housing Plastic Cover is an original lubrication system component, designed specifically for the N12 engine family. Thanks to its precise fit to the petrol engine design, it ensures stable mounting of the oil filter cartridge and the tightness of the entire oil circuit, which translates into safe and predictable operation of the power unit.

Specifications and technical data

• SKU: 8643762-1
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 8643762
• Substitutable numbers: 11428643762, 8643762, 11427558521, 7558521, ŁS
• Fuel type: Petrol
• Category: Oil Filters

Purpose and function in the N12 engine

The oil filter housing cover in the N12 engine is responsible for mechanically pressing the filter cartridge and maintaining the correct oil pressure in the lubrication gallery. In Mini Cooper One R55, R56, and R57 petrol engines, this component is particularly important from the point of view of:

• maintaining the tightness of the lubrication system under variable operating pressure,
• stable guidance of the oil filter cartridge in the housing,
• reducing the risk of oil leaks in the filter area,
• ensuring proper oil flow through the filter medium.

A properly selected oil filter housing cover is crucial for maintaining engine oil cleanliness and protecting sensitive components of the N12 unit from accelerated wear.

Construction and material of the cover

The presented cover is made of plastic adapted to work in an engine oil environment and elevated temperatures. The design provides:

• a thread matched to the factory oil filter housing in the N12 engine,
• geometry allowing for proper seating of the filter cartridge,
• sealing surfaces working with the appropriate sealing ring.

Thanks to the use of lightweight yet durable plastic, the cover does not additionally burden the engine cylinder head and withstands the typical operating conditions of Mini petrol units.

Benefits of using the original oil filter cover

Using the original oil filter housing cover in the Mini Cooper One R55/R56/R57 with the N12 engine brings a number of practical service benefits:

• Precise fit – thread and shape consistent with the factory oil filter housing, which facilitates assembly and disassembly during service replacements.
• Stable operation of the lubrication system – proper pressing of the filter cartridge reduces the risk of oil bypassing the filter medium.
• Possibility of trouble-free periodic maintenance – easy access during standard oil change procedures in the petrol engine.
• Consistency with the factory design of the N12 unit – no need to use adapters or non-factory solutions.

This solution is especially recommended when replacing a damaged, cracked, or deformed cover, which may cause leaks or hinder service.

Condition of the component and use in service practice

The offered oil filter housing cover is a part from the Oil Filters category, sourced from disassembly, which allows for economical repair while maintaining the original Mini design specification. This type of component is often replaced when:

• mechanical damage occurred during previous filter replacements,
• signs of wear on the thread or sealing surfaces are visible,
• oil leaks appear in the filter housing area.

Selecting the correct cover for the Mini Cooper One R55/R56/R57 petrol engine with the N12 unit allows for restoring the proper tightness of the lubrication system without interfering with other components.

Technical support and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your Mini and need other components from the same group, such as filter housings, filter cartridges, or additional mounting elements, check the available parts in the Mini Oil Filters category.

For a better understanding of the impact of the lubrication and cooling system on the durability of the power unit, it is worth reading the service guide regarding overheating and engine protection: Engine cooling system – overheating, repair, and used radiators. You will find practical tips there on how to maintain stable engine operating conditions, which complements proper oil filter maintenance.