Mini Cooper One D R55 R56 W16 Timing Case Cover Bottom 9643649280

Mini Cooper One D R55 R56 W16 Timing Case Cover Bottom is an original component from the Tappet and Valve Covers group, designed for use in BMW vehicles. This used OEM part ensures factory-fit, stable mounting, and effective protection of critical engine unit components against contamination and mechanical damage.

Specifications and technical data

• SKU: 7804888
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7804888
• Substitutable numbers: 11147804888, 7804888, 9643649280
• Category: Rocker & Valve Covers

Purpose and technical function

The presented cover belongs to a group of components responsible for protecting the timing system, tappets, and valves from external factors. Its task is to limit the ingress of dust, moisture, and fine debris into the area around the cylinder head, which promotes stable engine operation and helps keep the engine bay tidy.

Thanks to its OEM-compliant design, the cover works with factory mounting points, minimizing the risk of stress, unwanted vibrations, and leaks in the area of the protected components. This solution is particularly beneficial for vehicle maintenance where maintaining the original geometry and layout of components in the engine bay is important.

Benefits of using an original cover

Using an original cover instead of a worn or damaged part helps restore proper operating conditions in the upper part of the engine. Key advantages include:

• factory fitment to the engine unit and mounting points,
• stable support and protection for tappet and valve components,
• reduction of contamination ingress into the cylinder head zone,
• organized maintenance process within the engine accessories.

For the user, this means more predictable operation, easier diagnosis of potential leaks, and a more aesthetic engine bay appearance, which is significant for both daily use and vehicle resale.

Installation characteristics and part condition

The cover is a used part, which in practice means it comes from vehicle dismantling and may show signs of normal wear while maintaining the functionality required for further use. This type of component is particularly attractive to users looking for a cost-effective solution while maintaining the manufacturer's original specifications.

Due to its design consistent with the factory assembly standard, the cover replacement can be carried out during a typical service process without the need to modify adjacent components. This is a beneficial solution for workshops and individual users who expect a predictable workflow and compatibility with the existing engine configuration.

Part selection by numbers and integration with other components

The item has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection of the correct cover for a specific engine version. In practice, this reduces the risk of ordering errors and ensures consistency with other timing system and cylinder head components.

For vehicles equipped with advanced emission control systems, a correctly selected cover helps maintain stable operating conditions within the engine unit. If you want to better understand how individual engine components work with emission reduction systems, it is worth reading the article describing the EGR exhaust gas recirculation system: EGR: what it is and why it is worth considering used EGR valves.

Expanding the engine zone in BMW vehicles

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 additional covers, caps, or components protecting the valve area, check the available parts in the BMW Tappet and Valve Covers category.

Such an approach allows you to consistently restore the engine unit zone, ensure the protection of key components, and maintain a uniform quality standard for all used components.