BMW 3 Series E90 E91 E92 LCI Breather Line Fuel Tank Vent 7170654

BMW 3 Series E90 E91 E92 LCI Breather Line Fuel Tank Vent is an original fuel system component from the Lines, hoses and pipes group, designed for use in facelift versions of the BMW 3 Series E90, E91, and E92. A properly selected breather line helps maintain stable fuel system operating parameters and reduces the risk of leaks.

Specifications and technical data

• SKU: 7170654
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7170654
• Substitutable numbers: 16137170654, 7170654, EM
• Category: Hoses, Lines & Pipes

Purpose and function of the breather line

The presented fuel tank breather line has been designed for the fuel system of the BMW 3 Series E90, E91, and E92 generation after the facelift (LCI). Its task is to control the discharge of fuel vapors and equalize pressure in the tank, which promotes stable engine operation and proper interaction with other fuel system components.

A well-chosen breather line:

• limits the risk of vacuum or overpressure in the tank,
• supports the proper operation of the fuel supply system,
• reduces the likelihood of errors related to tank ventilation.

Original origin and fitment for BMW

The component comes from the BMW range, which means it maintains factory geometry, connection diameters, and the routing method in the chassis. As a result, installation is predictable, and the line fits according to the original path without the need for modifications or fitting universal replacements.

The original breather line also means:

• consistency with the factory fuel system design,
• compatibility with mounts and brackets in the chassis,
• preservation of the vapor flow parameters designed by the manufacturer.

Used condition and practical benefits

The line is offered in used condition, which allows for an economical repair of the fuel system while maintaining the original origin of the part. For many BMW 3 Series E90/E91/E92 LCI users, this is a reasonable compromise between cost and quality, especially for components that are not subject to typical operational wear to the same extent as moving parts.

Using a used breather line can be particularly beneficial when:

• the existing line has suffered mechanical damage (cracking, breaking, abrasion),
• it is necessary to replace the component after service intervention in the fuel tank area,
• you want to maintain consistency with the vehicle's original specification.

Application area and related components

The breather line operates in the fuel system area, in the immediate vicinity of the tank and chassis line routing. Its correct installation is important for operational safety, limiting fuel vapor emissions, and proper cooperation with other lines, hoses, and pipes in the vehicle.

If you are planning a comprehensive repair or upgrade of the fuel system area in your BMW and need other components from the same group, such as supply lines, return hoses, or breather pipes, check the available parts in the BMW lines, hoses and pipes category.

Why consider used fuel system components

In many cases, using used, original components allows you to keep the car in good technical condition at reasonable service costs. This applies not only to fuel lines but also to other subassemblies in premium brand vehicles. You can find more about the advantages of using original parts from dismantling in high-class cars in the article about used parts for Mercedes from dismantling.

Summary

BMW 3 Series E90 E91 E92 LCI Breather Line Fuel Tank Vent is a practical solution for users looking for an original fuel system component at an attractive price. Proper fitment for post-facelift BMW 3 Series models, preservation of factory geometry, and the possibility of economical repair make it a reasonable choice when replacing a damaged breather line.