BMW E81 E87 E90 E91 120i 320i Inlet Camshaft Petrol N43 7563345

BMW E81 E87 E90 E91 120i 320i Inlet Camshaft is a precision timing system component designed for BMW 1 Series and 3 Series petrol engines with the N43 unit. This component from the Camshafts category is responsible for the precise control of intake valve timing, which translates into stable engine operation, correct power output, and smooth performance. Choosing an original BMW inlet camshaft is a conscious investment in durability, proper dynamics, and safe operation of the powertrain.

Specifications and technical data

• SKU: 7563345
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7563345
• Substitutable numbers: 7563345, 11317563345
• Fuel type: Petrol
• Part type: Camshaft
• Category: Camshafts

Purpose and role of the N43 inlet camshaft

The presented inlet camshaft has been designed specifically for BMW N43 petrol engines fitted in 120i and 320i models. Its task is to precisely control the operation of the intake valves, which is crucial for:

• correct filling of cylinders with the air-fuel mixture,
• maintaining appropriate power and torque across the entire rev range,
• stable idle operation and smooth acceleration,
• maintaining proper fuel consumption and exhaust emission levels. A properly selected inlet camshaft in a BMW N43 petrol engine helps reduce the risk of uneven engine operation, power drops, or errors related to timing synchronization.

Advantages of using an original BMW camshaft

The original camshaft from the Camshafts group ensures compliance with BMW factory tolerances, which has a direct impact on safety and comfort of use. The most important benefits include:

• Factory cam geometry – maintaining the correct lift and opening duration of the intake valves, in accordance with the design assumptions of the N43 engine.
• Compatibility with the timing control system – correct cooperation with camshaft position sensors, the engine control unit, and other timing components.
• Stable operating parameters – reducing the risk of knocking, vibrations, and improper valve operation under various loads.
• The ability to use existing mounting points and accessories without the need for modifications. By maintaining the original design specifications, the inlet camshaft for BMW E81, E87, E90, and E91 with the N43 engine allows for the restoration of the powertrain's factory performance characteristics.

Product characteristics and application in a petrol engine

The inlet camshaft in a petrol engine performs a particularly responsible function, as it directly influences the cylinder filling process. In the case of the N43 unit, using the correct component allows for:

• maintaining the appropriate intake valve opening advance and retard angles,
• ensuring even load distribution across individual cylinders,
• minimizing the risk of premature wear of cooperating elements (tappets, rocker arms, bearings),
• preserving the engine flexibility characteristics intended by the manufacturer. In BMW 1 Series (E81, E87) and 3 Series (E90, E91) vehicles with the N43 unit, replacing a worn inlet camshaft with an original part is often a key step in restoring the full efficiency of the timing system.

Condition, fitment, and assembly aspects

The offered item is a used part, which allows for an economical restoration of the timing system's efficiency while maintaining original BMW specifications. Before installation, it is recommended to perform a standard verification of working surfaces, clearances, and mating components to ensure the entire system operates under stable conditions. A properly selected inlet camshaft for a specific N43 engine facilitates installation and limits the need for additional modifications.

A comprehensive approach to the BMW timing system

When performing service work on the timing system, it is worth paying attention not only to the camshaft itself but also to cooperating components such as the chain, tensioners, guides, or control elements. For users interested in a broader perspective on timing in BMW engines, including the cost-effectiveness of using original and used parts, the following article will be helpful: BMW N47 timing chain – typical failure and repair using original BMW parts. 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 camshafts, control elements, or cooperating timing components, check the available parts in the BMW Camshafts category.