BMW M2 F87 LCI M3 F80 M4 F82 F83 Oil Pipe Line Petrol S55 7846387

BMW M2 F87 LCI M3 F80 M4 F82 F83 Oil Pipe Line Petrol S55 is an original crankcase ventilation system component designed for S55 petrol engines in BMW M-series sports models. Thanks to its factory-spec geometry and fitment, it ensures stable oil vapor discharge, which supports the proper operation of the engine and reduces the risk of unwanted leaks. This is a practical solution for users who want to maintain consistency with the factory engine design and keep its performance parameters over a long service life.

Specifications and technical data

• SKU: 7846385-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7846385
• Substitutable numbers: 7846385, 11417846385, 7846387
• Fuel type: Petrol
• Category: Oil Pumps & Parts

Purpose and technical function

The presented oil pipe line operates within the crankcase ventilation system of the S55 petrol engine, used in BMW M2 F87 LCI, M3 F80, and M4 F82/F83 models. Its task is to direct oil vapors and gases from inside the engine to the appropriate components of the intake system, which helps maintain stable pressure in the crankcase and reduce oil contamination of the engine bay.

A properly selected oil pipe line:

• ensures a tight connection between the ventilation system components,
• minimizes the risk of blow-by and uncontrolled leaks,
• supports the maintenance of smooth engine operation under high loads characteristic of M units.

Benefits of using an original oil pipe line

In high-power engines such as the S55, the ventilation system operates under demanding thermal and pressure conditions. Using an original oil pipe line allows for the preservation of factory flow parameters and material resistance, which translates into:

• consistency with the factory engine operating characteristics – no need to modify other system components,
• better control over the amount of oil vapors entering the intake,
• reduction of the risk of errors related to improper operation of the ventilation system.

This is particularly important in cars used dynamically, where the stability of engine operating parameters has a direct impact on performance and component durability.

Product characteristics and fitment

The oil pipe line from this offer comes from the Oil pumps and parts group, which means it is a component related to the engine's lubrication system and oil management. The design of the pipe is adapted to the specific layout of components in the S55 engine bay, ensuring that the correct bending radii and mounting points are maintained.

The product is intended for units powered by petrol, which is significant when selecting parts within the BMW engine range. Choosing a pipe dedicated to a specific fuel type and engine family reduces the risk of incorrect installation and leaks resulting from structural differences.

Condition, verification, and practical application

The offered oil pipe line is a used item, which in practice means that before installation, it is worth verifying its surface for any signs of wear, such as micro-cracks or excessive material hardening. A proper assessment of the condition allows for the safe use of the part in further operation, maintaining a favorable cost-to-functionality ratio.

When selecting a pipe for a specific BMW M-series vehicle, it is recommended to use OEM markings and interchangeable numbers visible in the technical specification, as well as to verify compatibility with the vehicle's VIN. This approach helps avoid installation errors and ensures full compatibility with the ventilation system in a given engine variant.

Technical support and additional resources

To better understand how to select original used components for BMW sports models, it is worth using expert materials. A detailed discussion of VIN and OEM selection procedures, as well as practical examples of the impact of properly selected parts on engine durability, can be found in the article BMW – sports performance and precision. How do original used parts extend the life of a Bavarian icon?.

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 pipes, oil channels, or lubrication system components, check the available parts in the BMW Oil pumps and parts category.