BMW E81 E87 LCI E90 E91 118d 120d 318d 320d N47 N47D20A Engine Oil Filter Cover

BMW E81 E87 LCI E90 E91 118d 120d 318d 320d N47 N47D20A Engine Oil Filter Cover is an original lubrication system component designed for BMW N47 series engines, used in the compact E81, E87 LCI models and the E90 sedan. Thanks to its factory-standard design, it ensures proper sealing of the oil filter housing and maintains stable system pressure, which directly impacts engine safety. This is a practical service solution for users who want to maintain consistency with the manufacturer's factory specifications.

Specifications and technical data

• SKU: 7802118
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7802118
• Substitutable numbers: 11427802118, 7802118
• Category: Other Engine Parts

Purpose and function in the lubrication system

The oil filter cover in N47 engines is responsible for tightly sealing the filter cartridge and maintaining proper oil flow within the circuit. In BMW E81, E87 LCI, and E90 models, this component works with the factory filter housing, ensuring:

• stable positioning of the oil filter cartridge in the socket,
• control over the flow direction of the lubricating medium,
• reduced risk of leaks in the filter housing area,
• maintenance of system operating parameters in accordance with manufacturer requirements.

A properly selected oil filter cover is particularly important in diesel engines, where stable oil pressure is crucial for the durability of the powertrain.

Compatibility with BMW N47 engines

The presented cover has been designed for use in popular BMW 1 and 3 series E-generation models equipped with the N47 engine. This means it matches the factory geometry of the oil filter socket, thread, and seal, which translates into:

• trouble-free installation in place of the original part,
• compliance with factory tightening torque,
• no need for filter housing modifications or additional adapters.

As a result, the oil filter cover serves as a functional service replacement for users who want to restore the full efficiency of the lubrication system after damage or wear of the original component.

Product characteristics and advantages

As a component from the BMW range, the oil filter cover has been manufactured in accordance with the manufacturer's requirements regarding fitment and operational durability. In practice, this means:

• maintaining appropriate structural rigidity during engine temperature fluctuations,
• proper cooperation with the filter cover seal,
• the ability to be removed and reinstalled multiple times during periodic oil changes.

A used component of this type is a good solution in situations where the existing cover has suffered mechanical damage, has been cross-threaded, or shows signs of excessive thread wear. Replacing it with a functional component helps reduce the risk of leaks and improves the convenience of service maintenance.

Practical installation tips

When installing the oil filter cover in an N47 engine, it is worth paying attention to the cleanliness of the socket and the condition of the seal. It is recommended to:

• thoroughly clean the contact surface of the filter housing,
• check the condition of the cover seal and replace it if necessary,
• use the appropriate tool for tightening to avoid damaging the thread.

This approach allows you to fully utilize the potential of the part and maintain stable operating conditions for the lubrication system in daily use.

Related components and further reading

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional caps, filter housings, or small mounting parts, check out the available parts in the Other BMW category.

If you are interested in a broader context of structural differences between sports and standard powertrains, including solutions in terms of lubrication, braking systems, and chassis, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which organizes these issues from the perspective of modern cars.

To better understand how the availability of the right components affects vehicle downtime in the workshop and repair planning, the material on reducing downtime through a wide range of used parts from a single warehouse, which describes the practical aspects of service logistics, may also be helpful.