BMW 1 3 E81 E87 E90 116i 316i N45 Engine Cylinder Head Cover 7505022 7526666

BMW 1 3 E81 E87 E90 116i 316i N45 Engine Cylinder Head Cover is an original, used engine cylinder head cover from the Tappet and Valve Covers group, designed for N45 engines in BMW 1 and 3 series models. This component is responsible for tightly covering the upper part of the engine, protecting the tappets and valves, and ensuring stable operation of the timing system, which directly impacts the engine's performance and refinement.

Specifications and technical data

• SKU: 7568579
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7568579
• Substitutable numbers: 11127568579, 7568579, 11127526665, 7526665, 7505022, 7526666
• Category: Rocker & Valve Covers

Purpose and technical function

The cylinder head cover in the N45 engine performs several key structural tasks. It ensures a tight separation of the valve and tappet workspace from the environment, stabilizes the operating conditions of the timing system, and limits the ingress of contaminants into the engine. For petrol units used in the BMW 1 Series E81/E87 and 3 Series E90, a correctly selected cylinder head cover is essential for maintaining proper pressure and correct oil circulation in the upper part of the engine.

The offered item is a factory BMW component, which ensures the correct geometry, mounting points, and fitment for the N45 cylinder head. As a result, installation is predictable, and the risk of leaks resulting from poor fitment is minimized.

Benefits of using an original cylinder head cover

Using an original cylinder head cover instead of a damaged or deformed part allows for the restoration of proper operating conditions in the upper part of the engine. In practice, this means:

• maintaining tightness in the tappet and valve area,
• reducing oil leaks from the upper part of the engine,
• correct guidance of timing components within the workspace intended by the manufacturer,
• preserving factory mounting points for accessories located on the cover.

For the user, this translates into more stable engine operation, easier diagnostics of potential leaks, and the ability to follow standard service procedures prescribed by BMW. Original construction also facilitates compatibility with factory gaskets and mounting hardware.

Product characteristics and installation

The cylinder head cover in this offer belongs to the Tappet and Valve Covers group, meaning it has been designed to operate in the immediate vicinity of timing components. The design intended for the N45 engine accounts for the specific layout of oil channels, mounting sockets, and the shape of the cylinder head itself. Thanks to this, after proper installation, it is possible to maintain the factory geometry of the system and predictable thermal load distribution.

When replacing the cylinder head cover, it is recommended to use a new gasket and thoroughly clean the contact surface on the engine head. Proper tightening of the bolts according to the manufacturer's service procedure helps reduce the risk of future leaks. A used part of this type is a good solution when the existing cover has cracked, deformed, or suffered mechanical damage due to overheating or improper installation.

Part selection by numbers and vehicle compatibility

Due to the specifics of N45 units and structural differences between individual versions of BMW engines, when selecting a cylinder head cover, it is crucial to compare the OEM part number and available interchangeable numbers with the vehicle's specification. The technical product description provides relevant identifiers that allow you to verify compatibility with a specific engine configuration in a BMW 1 or 3 series.

Before purchasing, it is worth comparing data from the vehicle's rating plate and service documentation with the information in the specifications section. This approach minimizes the risk of selecting the wrong cover variant and facilitates subsequent installation. Precise fitment is particularly important for components that have direct contact with the timing system and oil circuit.

Component condition and practical application

The offered cylinder head cover is a used part, which in practice means it has been removed from a vehicle and verified for further operational suitability. This type of component is a good choice when the priority is to maintain the factory engine specification while optimizing repair costs. A used cylinder head cover allows you to restore proper operating conditions for the upper part of the engine without the need for more expensive solutions.

In the case of a planned replacement, it is worth combining the installation of the cover with checking the condition of the gasket, mounting bolts, and accessories located on the cover. This approach allows for comprehensive service of the cylinder head area in a single maintenance cycle.

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 covers, seals, or mounting elements, check out the available parts in the BMW Tappet and Valve Covers category.

For a better understanding of how modern engines work and the impact of individual components on exhaust emissions and engine efficiency, 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.