Cylinder Head Housing BMW E70 E90 LCI F10 F20 F30 N57 Diesel Engine 7800044

Cylinder Head Housing BMW E70 E90 LCI F10 F20 F30 N57 Diesel Engine is a precision component from the Cylinder Heads group, designed for BMW N57 family diesel engines. It is responsible for the stable guidance of the camshafts in four-cylinder units, which has a direct impact on engine refinement and correct timing synchronization.

Specifications and technical data

• SKU: 7800044
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7800044
• Substitutable numbers: 11317800044, 7800044
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Cylinder Heads

Purpose and role in the timing system

The camshaft housing in N57 engines is responsible for maintaining the correct position of the camshafts relative to the cylinder head and oil channels. In BMW diesel units operating under high loads, stable camshaft support is crucial for:

• maintaining correct valve timing at variable engine speeds,
• reducing wear on cams and tappets,
• ensuring uniform lubrication of mating components.

This element is particularly important in modern diesel engines, where the precision of valve control affects performance, exhaust emissions, and the durability of the power unit.

Compatibility with BMW N57 engines

The housing has been designed for use in four-cylinder BMW N57 family diesel units, used in models such as the 3 Series (E90) and 1 Series (F20). The design, matched to the architecture of these engines' cylinder heads, allows for:

• maintaining the factory geometry of the timing system,
• compatibility with original BMW camshafts,
• correct routing of oil channels within the cylinder head.

As a result, installation is based on factory mounting points, without the need for cylinder head modifications or additional alterations.

Technical characteristics and advantages

The camshaft housing in a diesel engine operates under demanding conditions – high combustion pressure, variable temperatures, and high dynamic loads. Using an original solution from the Cylinder Heads group ensures:

• stable camshaft guidance across the entire RPM range,
• adequate structural rigidity in the bearing area,
• compatibility with the factory engine lubrication system.

Replacing a worn housing with a functional component helps reduce the risk of premature camshaft wear, timing noise, and valve synchronization issues, which is significant for both performance and engine durability.

Use in cylinder head service and repairs

The camshaft housing is often replaced during comprehensive cylinder head work, such as regeneration, gasket replacement, or timing system overhauls. In BMW N57 engines used in E90 and F20 models, its condition has a direct impact on:

• the accuracy of camshaft positioning relative to position sensors,
• even loading of the camshaft bearings,
• operational stability at the high torque characteristic of diesel engines.

Selecting the correct housing is particularly important when combining new and used components within the cylinder head to maintain the dimensional and functional consistency of the entire system.

Condition and origin of the part

The offered camshaft housing is a used part, sourced from the dismantling of a BMW unit. This type of part allows for an economical engine repair while maintaining the manufacturer's original specifications. For many users, it is a reasonable compromise between repair costs and maintaining factory design solutions.

If you are planning a comprehensive repair or upgrade of your BMW engine area and need other components from the same group, such as cylinder head housings, valve covers, or camshaft mounting elements, check the available parts in the BMW Cylinder Heads category.

For drivers interested in a broader approach to used components and optimizing operating costs, it is worth reading the article Used car parts for Mini Cooper – a way for style and savings, which discusses the practical aspects of selecting parts from the secondary market.