BMW E90 E91 LCI E92 Engine Intake Camshaft Inlet Shaft N57 Diesel 8575439

BMW E90 E91 LCI E92 Engine Intake Camshaft Inlet Shaft N57 Diesel is an original component from the Camshafts group, designed for BMW N57 series diesel engines. This used OEM component ensures proper cooperation with the intake system, stable timing operation, and correct valve timing control in BMW diesel-powered engines.

Specifications and technical data

• SKU: 8575439
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8575439
• Substitutable numbers: 8575439, 11318575439, 8509120, 11318509120, 7800045, 11317800045, 7823929, 11317823929
• Fuel type: Diesel
• Category: Camshafts

Purpose and function in the N57 engine

The intake camshaft in a diesel engine is responsible for the precise control of intake valve opening, which translates into proper cylinder filling with the air mixture. In N57 units, this is crucial for stable idling, smooth acceleration, and maintaining the correct combustion parameters characteristic of Diesel engines.

A properly selected BMW camshaft allows for maintaining the factory performance characteristics of the engine, reducing the risk of power loss and improper operation of the injection and turbocharging systems. Replacing it with a component that is structurally consistent with the original is particularly important during cylinder head repairs, engine overhauls, or when addressing the effects of mechanical wear.

Benefits of using an original BMW camshaft

Using an original intake camshaft in an N57 engine ensures:

• Full geometric compatibility with the cylinder head and other timing components, which facilitates installation and adjustment.
• The correct cam profile, matched to the operating characteristics of the BMW diesel unit.
• Stable cooperation with the factory engine management system, without the need for software modifications.
• The possibility of using existing accompanying components, such as tappets or rocker arms, provided their technical condition allows for it.

Thanks to this, the BMW intake camshaft for the N57 engine is a practical solution for professional engine repairs in E90, E91 LCI, and E92 models, where maintaining factory operating parameters is essential.

Product characteristics and condition

The offered element comes from the Camshafts group and is intended for diesel-powered engines. The product is used, which in practice means the possibility of an economical repair while maintaining the manufacturer's original specifications. This type of component is particularly attractive in the case of advanced diesel units, where a new OEM part can be a significant cost item.

The intake camshaft for BMW E90, E91 LCI, and E92 with an N57 engine will work well both when replacing a damaged part and during a cylinder head overhaul, when it is necessary to restore the correct operation of the valve system without interfering with the factory design.

Application in the diesel timing system

In diesel engines, the precision of the timing system has a direct impact on:

• the efficiency of cylinder air filling,
• the refinement of the engine across the entire rev range,
• correct torque and power values,
• exhaust emissions and cooperation with the turbocharging system.

Selecting the right BMW camshaft for the N57 engine is therefore important not only from the point of view of mechanical durability but also the stability of operating parameters. A used OEM element allows for maintaining factory settings and operating characteristics, which is particularly important in modern diesel units.

Expansion of the BMW timing system

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other components from the same group, such as additional camshafts, rocker arms, or tappets, check the available parts in the BMW Camshafts category.

To better plan the service of your engine, it is also worth expanding your knowledge about the impact of operating temperature on the engine and its accessories – you will find practical tips in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which will help you look at car operation in a broader, technical context.