BMW 1 3 Series F20 F21 F31 LCI Mini F55 F56 Engine Valve Train Sprocket 8642165

BMW 1 / 3 F20 F21 F31 LCI and Mini F55 F56 camshaft gear is an original valve drive component designed for precise cooperation with the engine in these models. Thanks to its factory specifications, it ensures stable power transfer in the timing system and maintains the correct operating characteristics of the power unit. A used OEM component allows for a technically correct replacement of a worn gear without interfering with the engine's construction.

Specifications and technical data

• SKU: 8642165
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8642165
• Substitutable numbers: 13528642165, 8642165, 13527617476, 7617476
• Category: Other Engine Parts

Purpose and Function in the Timing System

The presented gear is a component of the valve drive in BMW and Mini engines, responsible for transferring torque within the timing system. A correctly selected gear helps maintain proper synchronization between the crankshaft and the valve mechanism, which translates to:

• stable engine operation across the full RPM range,
• correct cylinder filling with the mixture,
• maintenance of factory performance parameters and running smoothness.

Original manufacturing in accordance with BMW standards promotes the preservation of correct tooth geometry and fit with other system components.

Compatibility and Part Identification

The gear has been specifically designed for selected versions of BMW 1 and 3 Series F20, F21, F31 LCI, and Mini F55 and F56, facilitating its integration with the factory drivetrain. The part has a dedicated OEM number and associated interchangeable numbers, allowing for unambiguous identification in service catalogs and parts selection systems.

In the product description and technical specifications section, you will find:

• the OEM designation assigned to this gear,
• reference numbers for verifying interchangeability,
• the SKU associated with the store's offer.

Before purchasing, it is advisable to compare the designations with your vehicle's data or service documentation to ensure full assembly compatibility.

Product Characteristics and Condition

The gear comes from the group of original BMW components, meaning it adheres to factory manufacturing tolerances and is compatible with other timing system elements. As a used part, it represents a sensible choice for servicing or repair when the priority is to combine OEM quality with cost control.

The main advantages of this solution include:

• factory fit for BMW and Mini engines covered by the application,
• preservation of the original geometry of mating surfaces,
• suitability for professional service and individual repairs.

Application in Service and Tuning

Replacing the valve drive gear is an important step in works related to the timing system, cylinder head overhaul, or engine performance optimization. A correctly selected component helps reduce the risk of incorrect synchronization, mechanical noise, or accelerated wear of mating parts.

If you are interested in a broader context of engine unit modifications and want to better understand how component selection affects performance, check out the guide how to increase engine power with used parts, where you will find practical tips for safe tuning.

Related Categories and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as gears, valve drive components, or small mounting parts, check the available parts in the Other BMW category.

To compare solutions used in different brands and better understand the structural differences in performance engines, you can also read the article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses, among other things, the specifics of engines, brakes, and chassis in high-performance versions.