BMW F20 F21 F22 F30 Crankshaft Balance Shaft Sprocket N47 8509302

BMW F20 F21 F22 F30 Crankshaft Balance Shaft Sprocket is a precision component from the Sprockets category, designed for B47 engine drive systems in popular BMW 1, 2, and 3 series models. Its original BMW origin ensures proper geometric fitment, stable operation within the system, and predictable performance under load.

Specifications and technical data

• SKU: 8509302
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8509302
• Substitutable numbers: 8509302
• Part type: Sprocket
• Category: Sprockets

Technical characteristics of the B47 sprocket

The presented sprocket has been designed as a component of the drive system in B47 units used in the BMW F20, F21, F22, and F30. The tooth design is adapted to operate under high torsional loads, which allows for stable torque transmission between mating components. Thanks to the maintenance of factory tooth geometry and appropriate material hardness, the element ensures even meshing and reduces the risk of excessive vibrations in the system.

As a part of the Sprockets group, the component works with other sprockets in the system, creating a coherent, mechanically tuned assembly. Proper fitment with original shafts, chains, or other drive elements translates into predictable operation of the entire assembly and facilitates the diagnosis of potential faults.

Purpose and compatibility with BMW models

The B47 sprocket is dedicated for use in selected variants of the BMW F-series with the B47 engine, including F20, F21, F22, and F30 body styles. Using an original element from the same design family allows for maintaining compliance with factory assembly tolerances and engine operating parameters. This solution is particularly recommended for timing system repairs or other components where the precision of meshing is crucial for the durability of the entire engine.

Selecting a sprocket from the same BMW product line reduces the risk of issues with improper fitment, operating noise, or accelerated wear of mating parts. In practice, this translates into more predictable service and easier technical condition monitoring during subsequent inspections.

Component condition and service application

The offered sprocket is primarily used in service repairs and for replacing wear-and-tear components in B47 units. Choosing an original component from dismantling allows for maintaining the structural integrity of the system while reducing costs compared to purchasing a new part. This is a solution frequently chosen by workshops specializing in the BMW brand that prioritize technically correct yet economical repairs.

The element can be used both for standard replacement of worn components and for more extensive engine overhaul work, where maintaining the original engine performance characteristics is essential. The use of a factory sprocket promotes the maintenance of proper synchronization of mating mechanisms.

Benefits of using an original BMW sprocket

The use of an original sprocket in the B47 engine brings a number of practical service and operational benefits:

• maintenance of factory meshing geometry and proper cooperation with other system elements,
• reduced risk of incorrect installation due to compatibility with BMW design solutions,
• stable operation of the drive system under typical operational loads,
• easier diagnostics and predictable behavior of components in the long term.

For workshops and users who want to maintain the technical integrity of the B47 unit, choosing an original sprocket is a solution that promotes durability and repeatable service results.

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 sprockets, mating gears, or drive transmission elements, check out the available parts in the BMW Sprockets category.

Additional information and knowledge about used parts

When planning repairs using second-hand components, it is worth knowing the best practices for selecting and installing drive elements to maintain the right balance between cost and durability. A broader discussion on the topic of using used components in premium segment cars can be found in the article Audi on second-hand parts – tuning and repairs without losing quality, which shows how to consciously approach such solutions also in the context of other German brands.