Audi R8 42 Air Filter Cleaner Box Upper Part Cap Cover 420133846B

Audi R8 42 Air Filter Cleaner Box Upper Part Cap Cover is an original intake system component designed to work with the factory air filter in Audi sports models. Thanks to its precise fit to the lower housing, it ensures stable seating of the filter element and airtight airflow, which promotes efficient engine operation and maintains proper flow parameters. This solution allows for maintaining the factory intake characteristics without the need for structural modifications.

Specifications and technical data

• SKU: 420133846B
• Mark: Audi
• Condition: Used
• OEM Part Number: 420133846B
• Substitutable numbers: 420133846B, 420 133 846 B
• Part type: Air Filter
• Category: Air Filters

Purpose and function in the intake system

The described upper part of the air filter housing has been designed specifically for Audi R8 42 series models, where the intake system operates under significant thermal and flow loads. The component is responsible for guiding air to the filter element and maintaining a tight connection with the lower part of the box, which reduces the risk of contaminants entering further sections of the intake.

A properly selected air filter housing cover helps maintain stable engine operating parameters and supports even airflow at high RPMs. Thanks to the OEM design, compatibility with factory mounts, seals, and intake ducts is preserved.

Construction and fit for Audi R8 42

The air filter box upper cover is a structural element matched to the standard housing used in the Audi R8 42. The shape and geometry of the mounts allow for installation in the original body points and proper alignment with the lower part of the housing, without the need for modifications or additional adapters.

The OEM solution provides:

• compatibility with the factory air filter element,
• proper routing of intake channels,
• maintenance of the housing stiffness and stability intended by the manufacturer,
• consistency with other engine bay components in terms of installation.

Component condition and service application

The air filter housing cover is offered as a used part, which allows for an economical replacement of a damaged or deformed element while maintaining the manufacturer's original specifications. This is a practical solution in situations where cracks, broken tabs, or leaks have occurred within the factory filter box.

Replacing the upper part of the air filter housing is particularly recommended when:

• mechanical damage affecting airtightness is visible,
• tabs or mounting points do not ensure stable closure,
• leaks appear, resulting in the intake of unfiltered air.

Benefits of using the original air filter housing

Using the original upper air filter housing cover in the Audi R8 42 allows for maintaining intake system operating parameters in accordance with the manufacturer's assumptions. Compared to replacements or universal elements, the OEM part ensures:

• secure fit to factory mounting points,
• consistency with the standard intake channel geometry,
• reduction of the risk of unwanted turbulence in airflow,
• easier diagnostics and future service maintenance.

For vehicles with a sports character, such as the Audi R8, maintaining the factory air filter housing design is important for both the durability of the power unit and the repeatability of performance.

Expanding the Audi intake system – Air filters

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as filter elements, lower housings, or intake ducts, check the available parts in the Audi Air Filters category.

More about the use of used parts

When selecting used body and engine accessory components, it is worth paying attention to their origin and compliance with factory specifications. Additional information on how to effectively use used components and what to look for when choosing them can be found in the article on replacing body elements with used car parts, which discusses the practical aspects of using dismantled parts in premium brand vehicles, including Audi.