BMW E81 E87 LCI E90 Engine N47 Head Rocker Cylinder Cover 7797613

Description

BMW E81 E87 LCI E90 Engine N47 Head Rocker Cylinder Cover is an original component from the Cylinder Heads group, designed for BMW N47 engine units used in the E81, E87, and E90 series. This used OEM rocker cover ensures factory-fitment to the cylinder head, proper sealing of the timing chamber, and stable mounting of engine accessories.

Specifications and technical data

• SKU: 7797613
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797613
• Substitutable numbers: 11128508570, 8508570, 11127797613, 7797613
• Category: Cylinder Heads

Purpose and function of the BMW N47 rocker cover

The BMW N47 engine rocker cover plays a crucial role in the cylinder head area – it is responsible for tightly sealing the upper part of the engine unit, protecting the timing mechanism, and managing oil circulation in the upper section of the engine. The original BMW design guarantees proper adhesion to the cylinder head surface, which reduces the risk of oil leaks and unwanted gas blow-by from the valve chamber.

This component is particularly important in N47 diesel engines, where thermal stability, vibration resistance, and proper crankcase ventilation have a direct impact on the engine’s performance and the durability of other components in the cylinder head area.

Advantages of using an original BMW rocker cover

Choosing an original rocker cover from the Cylinder Heads group for a BMW E81, E87, or E90 with an N47 engine primarily ensures compatibility with the factory mounting system, as well as oil and ventilation channels. As a result, installation is predictable, without the need for modifications or adjustments to the cylinder head.

• Factory fitment for the N47 engine cylinder head in BMW E81, E87, and E90 series models.
• Properly designed oil and gas routing in the upper part of the engine.
• Stable mounting of accessories located in the rocker cover area.
• A solution consistent with the vehicle manufacturer’s design specifications.

By maintaining the original geometry and mounting points, the cover works correctly with the gasket and other cylinder head components, which helps maintain system tightness and limits the risk of future leaks.

Characteristics of the used component

The offered BMW rocker cover belongs to the used OEM parts group, meaning it has been removed from an original vehicle and retains the manufacturer’s factory specifications. This type of component is a good solution in situations where the existing cover has suffered mechanical damage, thermal deformation, or shows leaks in the cylinder head area.

Choosing a used OEM element allows for maintaining high consistency with the factory engine design while optimizing repair costs. This is particularly important for N47 units, where the precision of component fitment in the cylinder head area is essential for the proper operation of the entire powertrain.

Selection and compatibility within the cylinder head

The rocker cover designed for the N47 engine in the BMW E81, E87, and E90 is a component strictly linked to a specific type of cylinder head; therefore, when selecting parts, it is crucial to rely on OEM markings and interchangeable part numbers. This allows for verifying compatibility with a specific engine version and avoiding installation issues.

The original BMW solution in the cylinder head area ensures consistency with other timing system components, lubrication systems, and ventilation systems, which translates into stable engine operation across the full load range.

Support in choosing a used part

If you are considering whether a new or used component is a better choice for a rocker cover, comparing the costs and durability of both solutions may be helpful. In this context, it is worth checking out our guide Car parts – new or used? Comparing costs, quality, and durability, which discusses the practical aspects of selecting vehicle components.

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 cylinder head housings, mounting elements, or additional components installed in the valve area, check out the available parts in the BMW Cylinder Heads category.