Filler Lock BMW F30 LCI F45 B38X B48X Petrol Fuel Flap Cap Locking Mechanism

The BMW F30 LCI F45 B38X B48X Fuel Filler Neck Lock is an original part from the Fuel Tanks and Filler Necks category, designed for gasoline systems in modern BMW models. It ensures secure closure of the filler neck, stabilizes the refueling system's operation, and helps maintain the proper performance parameters of B38X and B48X engines.

Specifications and technical data

• SKU: 7377654
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7377654
• Substitutable numbers: 7377654, 51177377654
• Fuel type: Petrol
• Category: Fuel Tanks & Filler Necks

Purpose and Function of the Fuel Filler Neck Lock

The fuel filler neck lock in BMW F-series models plays a crucial role in the safety and sealing of the refueling system. It is responsible for:

• controlled opening and closing of the filler neck during gasoline refueling,
• maintaining the fuel filler neck system's seal during daily operation,
• protection against accidental opening of the flap and preventing contaminants from entering the filler neck.

In vehicles with B38X and B48X engines, a properly functioning lock supports the stable operation of the fuel system, which translates to predictable vehicle behavior and accurate diagnostics of potential faults.

Compatibility with BMW F30 LCI and F45

The presented lock has been specifically designed for BMW F30 LCI and F45 platforms with gasoline engines. This means:

• maintaining the factory mounting geometry within the fuel filler neck area,
• perfect fit with the original flap and filler neck pipe,
• compliance with the factory operating logic of the opening mechanism.

As a result, this part can be used as a direct replacement for the factory-installed lock, without the need for modifications or adaptations.

Technical Characteristics and User Benefits

The fuel filler neck lock is designed to operate in a system powered by gasoline, which is important for material resistance and long-term durability. The design intended by the vehicle manufacturer ensures:

• stable operation within the typical operating temperature ranges of the car,
• resistance to contact with gasoline and fuel vapors,
• proper cooperation with other elements of the filler neck system.

As a component from the Fuel Tanks and Filler Necks group, the lock contributes to the overall sealing and functionality of the entire refueling path, which is important for both safety and the correct operation of the vehicle's diagnostic system.

Condition, Origin, and Installation Aspects

The offered fuel filler neck lock is a part sourced from disassembly, which allows for maintaining the original vehicle manufacturer's specifications. This type of component is particularly attractive to users who want to:

• maintain consistency with the factory design of the fuel system,
• replace a damaged lock mechanism without interfering with the installation,
• preserve the original manufacturing standard characteristic of the BMW brand.

In most cases, installing the lock involves mechanical work within the fuel filler neck area, without the need to modify other system components.

How to Select a Fuel Filler Neck Lock by OEM Number

When selecting a fuel filler neck lock for a BMW F30 LCI or F45, it is crucial to compare the OEM part number and any interchangeable numbers with the vehicle's documentation or the manufacturer's catalog. This allows you to ensure that:

• the part will be compatible with the specific engine version and year of manufacture,
• the lock mechanism will work with the existing filler neck flap and pipe,
• there will be no installation issues due to design differences.

For users who want to deepen their knowledge about selecting and operating fuel system components, the article: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair, will be helpful, as it discusses, among other things, the principles of identifying parts by OEM numbers.

Related Products and BMW Fuel System Development

If you are looking for other parts from the BMW Fuel Tanks and Filler Necks category, check out the BMW Fuel Tanks and Filler Necks available in our store to comprehensively care for your car's refueling system. Complementing a functional filler neck lock with appropriately selected hoses and a fuel tank can reduce the risk of leaks and facilitate later diagnostics of potential fuel supply problems.