BMW F90 M5 F92 M8 S63M Vent Pipe Crankcase Ventilation Line Hose Cyl 5-8 7852336

BMW F90 M5 F92 M8 S63M Vent Pipe Crankcase Ventilation Line Hose Cyl 5-8 is an original ventilation system component designed for gasoline engines in BMW sports models. It ensures stable gas discharge from cylinders 5–8, which promotes smooth engine operation and maintains proper combustion parameters. Thanks to its factory design, the hose fits dedicated mounting points, facilitating service and reducing the risk of leaks.

Specifications and technical data

• SKU: 7852336
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7852336
• Substitutable numbers: 7852336, 11157852336
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and technical function

The vent pipe for cylinders 5–8 in BMW F90 M5 and F92 M8 models running on gasoline is responsible for the controlled discharge of vapors and gases from a specific section of the engine. A properly functioning component of this type supports:

• stabilization of pressure in the combustion chambers,
• reduction of unwanted oil and vapor leaks,
• maintenance of proper operation of the crankcase ventilation system and auxiliary systems.

Due to its fitment for the specific engine configuration, the hose works with factory ports and connectors, which facilitates installation and subsequent maintenance.

Construction and engine system fitment

The element belongs to the Lines, hoses, and pipes group, meaning it has been designed to operate in an environment of elevated temperatures and variable pressure loads. The hose construction is adapted for:

• routing in a compact engine bay,
• precise routing between the cylinder head and ventilation system components,
• maintaining adequate flexibility while remaining resistant to deformation.

Its original BMW origin ensures proper fitment with engine accessories, which minimizes the need for additional modifications or adjustments during installation.

Operational characteristics and condition

The offered hose is a used part, which in practice means it comes from vehicle dismantling and has been verified for further serviceability. This type of component is particularly attractive to users who:

• want to maintain the original ventilation system specification,
• are looking for a cost-effective solution while preserving the factory geometry of the part,
• avoid random aftermarket replacements with uncertain fitment.

Choosing a verified vent pipe allows you to reduce the risk of engine performance issues resulting from leaks or incorrect gas flow in the cylinder 5–8 section.

Application in BMW service and upgrades

Replacing the vent pipe in high-power gasoline units, such as the F90 M5 and F92 M8, is an important element of preventive maintenance. A worn or leaking hose can lead to:

• unstable idle speed,
• increased oil consumption,
• disturbances in engine control system operation.

Selecting an original part from this group makes it easier to maintain the consistency of the entire intake and ventilation system and allows you to preserve engine performance characteristics in line with the manufacturer's specifications. If you are planning a wider range of work on fluid and gas systems in your BMW, it is worth checking other elements in the Lines, hoses, and pipes category to comprehensively prepare the vehicle for further use.

Why choose an original BMW hose

Using original BMW components in critical areas, such as cylinder ventilation, translates into predictable engine behavior and easier diagnostics in the future. In the case of high-end cars, including sports sedans and coupes, many users opt for a service strategy based on dismantled parts to optimize costs while maintaining factory quality. A similar approach can also be applied to other premium brands – you can find more on this topic in the article on servicing Porsche-class cars using verified used parts.

For owners of the BMW F90 M5 and F92 M8 who expect consistent gasoline engine performance, choosing a vent pipe dedicated to cylinders 5–8 is a sound technical solution, allowing for the maintenance of a high level of reliability without abandoning the manufacturer's original design concept.