BMW 3 5 Z8 Series E39 E46 E52 Fuel Tank Filler Cap Cover Petrol Diesel 1183342

BMW 3 5 Z8 Series E39 E46 E52 Fuel Tank Filler Cap Cover is an original fuel system component designed for BMW models powered by petrol. It ensures a tight seal of the filler neck, which reduces fuel evaporation and helps maintain stable operating conditions for the system. It is a practical service solution for users who want to restore the proper function of the factory-fitted cap.

Specifications and technical data

• SKU: 1183342
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1183342
• Substitutable numbers: 16111183342, 1183342, AS
• Fuel type: Petrol
• Category: Other Air & Fuel Delivery

Purpose and technical function

The fuel tank filler cap in BMW E39, E46, and E52 series models is responsible for tightly sealing the tank neck, which is important for both safety and the proper operation of the venting system. A correctly selected component limits the ingress of contaminants into the tank and minimizes fuel loss due to evaporation.

The product is designed to work with a fuel system based on petrol, in accordance with the manufacturer's factory specifications. This ensures compatibility with the pressure and vacuum parameters in the tank, which affects engine stability and the correct operation of on-board diagnostics.

Benefits of using an original BMW cap

Using a cap dedicated to specific BMW generations allows for consistency with the vehicle's factory design. The main advantages include:

• proper fit to the thread and fuel filler housing,
• maintaining fuel system tightness under daily operating conditions,
• reducing the risk of errors related to the fuel vapor system,
• maintaining the ergonomics of the filler operation in line with BMW solutions.

For the user, this means convenient operation during refueling and predictable vehicle behavior in the long term.

Product characteristics and fitment

The offered cap is an item from the original BMW parts group, which translates into compliance with factory manufacturing and design standards. The product is a used part, making it a cost-effective service solution while maintaining the correct fit for the fuel filler in the given model.

Before purchasing, it is worth verifying compatibility with your specific vehicle using the manufacturer's markings and information on part numbers and interchangeable numbers available in the technical specifications. This allows for precise selection of the cap without the need to modify any filler components.

Application in service practice

Replacing the fuel filler cap is one of the simpler service tasks, yet it can resolve issues related to fuel system leaks, the smell of fuel near the wheel arch, or near the filler flap. In the case of vehicles operated for many years, this is a component that naturally undergoes mechanical wear and aging of the sealing material.

Selecting a cap dedicated to the BMW E39, E46, and E52 allows for maintaining consistency with the vehicle's factory design, without the need to use replacements with uncertain fitment. It is a practical solution for workshops and individual users who want to restore the proper operation of the fuel system without interfering with other components.

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 additional caps, fasteners, or small service accessories, check out the available parts in the Other BMW category.

Technical support and additional knowledge

When working with the fuel system, it is worth knowing the design differences between individual model lines and engine versions. It may be helpful to review comparative materials regarding solutions used in high-end and sports vehicles, where the fuel system and associated components operate under more demanding conditions. In this context, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses design differences in the engine, brakes, and chassis, helping to better understand manufacturers' approaches to designing key vehicle systems.