Audi R8 42 Fuel Tank Filler Pipe Neck 420201135B

Audi R8 42 Fuel Tank Filler Pipe Neck is an original fuel system component, belonging to the Lines, hoses and pipes group, designed for precise fuel routing from the filler cap to the tank. This used Audi component ensures factory geometry, solid mounting, and compatibility with the body structure, which facilitates installation and reduces the risk of leaks. It is a practical solution for users who want to restore the proper operation of the refueling system in their Audi R8 without investing in a new part.

Specifications and technical data

• SKU: 420201135B
• Mark: Audi
• Condition: Used
• OEM Part Number: 420201135B
• Substitutable numbers: 420201135B, 420 201 135 B
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The described Audi R8 42 Fuel Tank Filler Pipe Neck is responsible for the safe and controlled delivery of fuel to the tank, while maintaining proper flow and connection tightness. This component works with the filler cap, flap, and fuel tank, creating a cohesive fuel system characteristic of the sporty Audi R8.

By maintaining the original design, the part allows for:

• restoring the factory routing of the line within the bodywork,
• correct positioning of the ports and mounts relative to the tank,
• maintaining system tightness during refueling and operation.

Construction and installation fitment

The Audi R8 42 Fuel Tank Filler Pipe Neck has been designed as a component matched to the specific chassis and body architecture of this model. The properly profiled shape of the pipe allows it to be routed in the space between the wheel arch, the tank, and the filler area, while maintaining clearances and safety relative to other components.

The original origin from the Audi group means that:

• mounting points are compatible with factory brackets and clamps,
• connection diameters are matched to standard fuel system connectors,
• the entire assembly works with factory seals and accompanying elements.

Part condition and service application

The item is offered as a used original component, which allows for an economical repair of the fuel filler system while maintaining compliance with the factory solution. This type of part is particularly useful in situations where there has been mechanical damage to the pipe, corrosion of the mounts, or leaks in the filler area.

Replacing the fuel filler pipe is recommended, among other things, when the following occur:

• fuel leaks in the vicinity of the filler or tank,
• problems with venting during refueling,
• signs of mechanical damage to the pipe or its mounts.

Benefits of using an original fuel filler pipe

Using an original fuel filler pipe in an Audi R8 allows for maintaining the structural integrity of the entire fuel system. Factory fitment reduces the need for modifications and minimizes the risk of leaks resulting from inaccurate fitting of aftermarket replacements. This is particularly important in cars with a sporty character, where the fuel system operates under varied load conditions.

Choosing a used OEM element also means:

• the possibility of reducing repair costs while maintaining the original specification,
• easier identification and selection of parts thanks to the factory marking,
• consistency with other components of the Audi fuel system.

Related elements from the Audi Lines, hoses and pipes group

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other elements from the same group, such as flexible fuel lines, rigid supply pipes, or auxiliary vent hoses, check the available parts in the Audi Lines, hoses and pipes category.

More about the advantages of used body and equipment elements

If you are considering a wider replacement of components in your car and want to better understand when used parts from dismantling are a reasonable choice, it is worth familiarizing yourself with practical tips on selecting such elements. Helpful information can be found in the article Replacing body parts with used ones – can body parts from dismantling look like new?, which discusses the approach to purchasing used parts for popular brands, including Audi.