BMW E81 E87 LCI E90 E91 N43 Fuel Tank Ventilation Valve With Pipe 7550387

The BMW E81 E87 E90 N43 Tank Vent Valve is an original BMW fuel system component, categorized under Injector Nozzles. It is responsible for controlled fuel tank venting, which is crucial for stable engine operation and proper fuel supply system functionality.

Specifications and technical data

• SKU: 7550387
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 13907550387
• Substitutable numbers: 13907550387, 7550387, 7551262, 1564571, N43
• Category: Fuel Injectors

Purpose and Role in the Fuel System

The BMW Tank Vent Valve works in conjunction with the injection system, ensuring proper fuel vapor discharge and maintaining adequate pressure within the tank. In vehicles with the N43 engine, it is important for:

• stable injector operation and uniform fuel delivery,
• limiting pressure fluctuations in the fuel system,
• reducing the risk of engine control unit errors related to the EVAP system.

A functional vent valve helps maintain correct mixture parameters, leading to predictable engine response under load and more consistent performance.

Construction and Fitment for BMW

The offered component comes from the BMW OE line, ensuring factory-matching connection geometry and compatibility with the original engine bay installation. This means:

• secure fitment to the electrical harness and fuel lines in BMW 1 and 3 Series models,
• retention of factory mounting points, facilitating installation and servicing,
• compatibility with the factory engine control unit designed for the N43 unit.

By adhering to manufacturer specifications, the valve integrates with the injection system without requiring installation modifications or mechanical adaptations.

Condition, Verification, and Service Application

The component is offered as a used OEM part, enabling cost-effective fuel system repair while maintaining original construction. This type of valve is particularly useful in situations where:

• hot start issues occur,
• irregular idling related to the venting system is present,
• diagnostic errors concerning the fuel vapor circuit appear.

Part selection is aided by the OEM marking and available cross-reference numbers, which allow verification of compatibility with specific vehicle configurations.

Benefits of Using an Original BMW Valve

Using an original vent valve within the BMW Injector Nozzles category in BMW vehicles offers a range of practical service benefits:

• maintaining predictable fuel system behavior under various engine operating conditions,
• reducing the risk of leaks in the fuel vapor circuit,
• easier diagnostics for future inspections and repairs,
• consistency with BMW service documentation, simplifying workshop operations.

This solution is recommended for both routine repairs and comprehensive injection system servicing in vehicles with the N43 engine.

Related Products and Technical Knowledge

If you are looking for other components from the BMW Injector Nozzles category, check out the BMW Injector Nozzles available in our store to select fuel system components that comply with factory manufacturer standards.

When diagnosing the fuel supply system, knowledge of typical injector fault symptoms can also be helpful. Detailed information can be found in the article Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails, which discusses symptoms, consequences, and basic diagnostics of injection components.

If you are considering the choice between new parts, aftermarket replacements, and used components, it is worth reading the guide Original, Aftermarket, or Used – Which Car Parts Offer the Best Value?, where you will find a comparison of costs, quality, and OEM number compatibility.