Fuel Tank Breather Valve - CI - XELV145
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Product Information
Full details
The CI Fuel Tank Breather Valve (XELV145) is designed for BMW enthusiasts and professional mechanics seeking a reliable replacement for malfunctioning fuel system pressure regulation. This high-quality electric valve ensures your vehicle's fuel tank maintains proper pressure, which is essential for optimal engine performance and emission control. While it offers excellent compatibility with specific classic BMW models, users must strictly verify their vehicle's OEM reference number before installation to ensure a perfect fit.
All features
| Model Part Number | XELV145 |
|---|---|
| Brand | CI |
Extended Product Information
FAQs
Is this a genuine BMW part?
This is a high-quality aftermarket part by CI that is a direct replacement for the original equipment BMW part 13907831770.
Will this fit my non-BMW vehicle?
No, this part is specifically engineered for BMW M3 E46, Z3, and Z4 models. Do not install it on incompatible vehicles.
Can I install this myself?
If you have basic mechanical knowledge and proper tools, it is an accessible DIY project, though professional installation is recommended if you are uncomfortable working with fuel systems.
How do I know if my breather valve is failing?
Common symptoms include a persistent check engine light, trouble filling the fuel tank, or a noticeable smell of raw fuel.
Do I need to replace the hoses when I replace the valve?
It is highly recommended to inspect all attached vacuum hoses for cracking or brittleness while the system is open, as old hoses can cause the same symptoms as a faulty valve.
Troubleshooting
Check engine light remains on after installation
Use an OBD-II scanner to clear existing trouble codes (DTCs) and allow the vehicle to complete a drive cycle.
Difficulty refueling (nozzle clicking off constantly)
Check if the breather valve is stuck closed, preventing air from escaping the tank during fill-ups; ensure hoses are clear of debris.
Pros and Cons
Pros
- Direct fit for specified BMW models
- Maintains optimal fuel tank pressure
- Prevents check engine light issues related to EVAP systems
- High-quality electric motor for consistent operation
Cons
- Requires specific vehicle compatibility checks
- Installation requires access to the fuel tank assembly area
- Not compatible with all BMW chassis types
Setup, Compatibility & Care
To ensure proper installation, cross-reference your current valve with OEM number 13907831770. Installation typically involves accessing the fuel tank breather area, which may require removing trunk lining or reaching behind the wheel well, depending on the specific model. Always disconnect the negative battery terminal before beginning work to prevent electrical shorts. Once installed, clear any stored error codes from the vehicle's ECU to reset the EVAP monitoring system. Periodic inspection of the vacuum hoses connected to the valve is recommended to ensure no dry rot or cracks are present, which could affect the performance of the new valve.