BMW X1 Z4 E84 E89 Petrol N20 Fuel Tank Breather Line 7636126 13907636126

BMW X1 Z4 E84 E89 Petrol N20 Fuel Tank Breather Line is an original component from the Lines, hoses and pipes category, designed for BMW petrol engine fuel systems. It ensures stable discharge of vapors and gases from the power unit, supporting the proper operation of the N20 engine and maintaining correct performance parameters. This is a solution for users looking for a proven, factory-spec component for their BMW X1 or Z4.

Specifications and technical data

• SKU: 7636126
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7636126
• Substitutable numbers: 13907636126, 7636126, 13907594308, 7594308
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function of the breather line

The breather line in a petrol engine plays a key role in the controlled discharge of vapors and pressure equalization in the system. In N20 units used in the BMW X1 and Z4, it is responsible for:

• stable venting of the engine's working spaces,
• limiting unwanted leaks and blow-by,
• cooperation with the intake system and exhaust emission control system,
• maintaining proper engine performance culture under various loads.

Thanks to its tailored geometry and correct internal diameter, the line ensures predictable gas flow, which promotes smooth engine operation and stable mixture parameters.

Original origin and fitment for BMW

The line has been designed specifically for the N20 engine architecture in BMW X1 and BMW Z4 models, which translates into a precise fit for factory connectors and mounts. This means:

• no need for modifications or diameter adjustments,
• compatibility with the original routing under the hood,
• easier installation compared to universal replacements,
• preservation of the factory design for routing lines in the engine bay.

Its original origin also helps maintain the integrity of the entire venting system, which is crucial when servicing modern BMW petrol units.

Condition, material, and benefits of use

The item comes from dismantling, which allows for combining an attractive cost with the preservation of factory specifications. The breather line from this group is made of materials resistant to temperature and contact with oil and fuel vapors, thanks to which:

• it maintains flexibility under typical engine operating conditions,
• it reduces the risk of cracks and leaks compared to worn-out components,
• it allows for restoring the proper operation of the venting system after a failure or wear of the old line.

Using an original line instead of a worn component helps eliminate issues such as unstable idle speed, incorrect sensor readings, or unwanted vapor odors around the vehicle.

Compatibility with the N20 petrol engine

The line is intended for use with the petrol power unit, which is important for the material's resistance to the specific operating conditions of this engine. In practice, this means:

• adaptation to the pressure and temperature characteristics of the system,
• compatibility with solutions used in the intake and crankcase ventilation system in the N20,
• possibility of use in the service process as a component restoring factory performance parameters.

For workshops specializing in the BMW brand and users servicing their cars themselves, this is a practical way to replace a worn line with a part consistent with factory assumptions.

Support with selection and system expansion

In the case of petrol engine venting and fuel systems, it is important that all Lines, hoses and pipes work together in a consistent manner. 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 vacuum lines, crankcase ventilation hoses, or fuel pipes, check the available parts in the BMW Lines, hoses and pipes category.

Additional information and purchasing advice

When selecting used venting system components, it is worth paying attention to the consistency of the entire set and the quality of the components used. To better plan your purchases and learn about the advantages of sourcing original used parts in one place, you can use the advice contained in the article Comprehensive supply: from the engine to the smallest clip – how to complete used car parts in one place?. This will make it easier for you to build a clear list of items needed for servicing your BMW X1 or Z4.