BMW E36 E46 E85 E86 Crankcase Intake Breather Vent Hose Tube Pipe Line 7831930

BMW E36 E46 E85 E86 Crankcase Intake Breather Vent Hose Tube Pipe Line is an original engine ventilation system component designed for selected BMW models. Thanks to its factory geometry and fitment, the hose ensures stable oil vapor discharge and proper operation of the crankcase ventilation system in the engine unit. It is a practical service solution for users who want to maintain compliance with the manufacturer's factory specifications.

Specifications and technical data

• SKU: 7831930
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7831930
• Substitutable numbers: 7831930, 11617831930
• Category: Other Engine Parts

Purpose and function of the hose

The crankcase breather hose in BMW engines plays a key role in controlling pressure inside the engine unit and discharging oil vapors into the intake system. In E36, E46, E85, and E86 models, using the correct hose allows you to:

• maintain proper pressure in the crankcase,
• reduce the risk of oil leaks at the seals,
• decrease contamination of the intake system,
• ensure stable engine operation across the full load range.

Thanks to a design consistent with factory solutions, the hose works with the original crankcase ventilation system, which promotes repeatable engine performance parameters and facilitates future diagnostics.

Compatibility with BMW models

The offered hose has been designed for use in popular BMW 3 Series generations and selected roadster/coupé models. This means it can be used in vehicles where the crankcase ventilation system is based on solutions used factory-wide in the E36, E46, E85, and E86.

It is always worth confirming the choice of part based on service documentation or vehicle data to ensure full compatibility with the specific engine version and model year. Using a hose consistent with the manufacturer's design helps maintain the integrity of the entire crankcase ventilation system and reduces the risk of leaks resulting from improper fitment of universal replacements.

Component characteristics and advantages of use

The crankcase breather hose in this version is an original BMW component, which translates into:

• factory fitment to the connectors and mounts in the engine bay,
• properly selected material stiffness and flexibility,
• hose geometry optimized for vapor flow,
• easier installation compared to universal hoses.

A properly functioning breather hose limits the phenomenon of excessive oil suction into the intake, which can affect the cleanliness of the manifold, throttle body, and air measurement components. In the long term, this promotes stable combustion parameters and makes it easier to keep the engine unit in good technical condition.

Component condition and installation aspects

The offered hose is a used part, which in practice means that before installation, it is worth verifying its visual condition and the tightness of the connections. During installation, it is recommended to:

• inspect the sockets and connectors to which the hose is connected,
• check for cracks or excessive material hardening on the surface,
• properly route the hose in the engine bay, maintaining factory routings.

This approach allows you to maintain the tightness of the ventilation system and minimize the risk of subsequent leaks or "false" air intake, which could disrupt engine operation.

System expansion and related BMW components

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as vacuum lines, crankcase ventilation elements, or small connectors in the engine bay, check the available parts in the Other BMW category.

For users interested in comparing technical solutions used in different brands and models, including sports versions, an article describing the differences in the construction of engine units, brakes, and chassis may be helpful – more information can be found in the material Audi RS vs other models – what is hidden under the hood and chassis?.