Audi A4 B9 A5 F5 Battery Overload Switch Housing 8W0915459K

Audi A4 B9 A5 F5 Battery Overload Switch Housing is an original component from the Fuses and fuse boxes group, designed for the power supply system in premium Audi models. This used, factory-original housing ensures proper seating of the overload switch, stable cable routing, and safe operation of the vehicle's electrical system.

Specifications and technical data

• SKU: 8W0915459K
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0915459K
• Substitutable numbers: 4F0915419A, 4F0 915 419 A, 8W0915459K, 8W0 915 459 K
• Part type: Fuse Box
• Category: Fuses & Fuse Boxes

Purpose and function in the electrical system

The overload switch housing in the Audi A4 B9 and A5 F5 is responsible for the mechanical protection of the component that secures the main power circuits. Its tasks include:

• maintaining the switch in the correct operating position,
• protection against accidental mechanical damage,
• organized routing of power cables,
• stable mounting within the fuse box or its module. As a result, the current protection system maintains the operating characteristics designed by the manufacturer, and the risk of improper contact or mounting play is minimized.

Construction and fitment for Audi

The housing was designed by the Audi brand as part of the vehicle's power distribution system. The construction is matched to the geometry of the factory fuse box, which facilitates installation and allows for maintaining the original routing of electrical harnesses. Key functional features:

• factory mounting points matched to the body and fuse module,
• shape providing adequate space for the overload switch,
• cable routing layout consistent with the Audi A4 B9 / A5 F5 electrical system. Such a solution promotes the consistency of the entire electrical system and minimizes the risk of stress on the connectors.

Condition, origin, and benefits of using a used part

The offered housing is a used component, sourced from the dismantling of an Audi vehicle. In practice, this means maintaining the original geometry, compatibility with factory mounts, and material consistency with other system components. Using an original, used overload switch housing allows you to:

• recreate the factory mounting method without modifications,
• maintain compatibility with the fuse box design,
• reduce repair costs while maintaining OE standards.

Application in service practice

The overload switch housing is particularly useful for repairs following mechanical damage in the fuse box area, replacing the power supply installation, or restoring the vehicle to factory condition after modifications. Replacing a damaged housing with a functional part allows you to restore:

• proper support and cover for the overload switch,
• safe routing of power cables,
• an aesthetic and organized appearance of the fuse compartment. For workshops specializing in the Audi brand, this is a convenient solution that shortens assembly time and reduces the risk of fitment issues.

Expanding the protection system in Audi

If you are planning a comprehensive repair or upgrade of the electrical system area in your Audi and need other elements from the same group, such as fuse modules, additional sockets, or cable covers, check out the available parts in the Audi Fuses and fuse boxes category. For car owners who are also interested in modifications and selecting used components with higher technical requirements, an article describing the practical aspects of purchasing and installing a sports exhaust system may be helpful – you can find it here: Second-hand Mini John Cooper Works Pro sports exhaust – a legal way to get a racing sound and +7 HP.