Audi A8 D4 Seal Engine Bonnet Hood Gasket Front 4H0823739C

Audi A8 D4 Seal Engine Bonnet Hood Gasket Front is a precision component from the Gaskets and sealing rings category, designed for use in the front section of the engine bay. It is responsible for tightly sealing the hood, limiting the ingress of water, dirt, and noise into the engine compartment, which promotes stable operating conditions for components and enhances the vehicle's aesthetics.

Specifications and technical data

• SKU: 4H0823739C
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0823739C
• Substitutable numbers: 4H0823739C, 4H0 823 739 C
• Location on the vehicle: Front
• Category: Gaskets & Seals

Purpose and function of the Audi A8 D4 hood seal

The described seal is factory-fitted to the front body section of the Audi A8 D4 generation, where it interfaces with the edge of the engine hood. Its task is to create a flexible barrier between the hood and the body structure, which helps to reduce:

• the ingress of water and contaminants into the engine bay,
• air turbulence around the front end,
• the transmission of engine noise to the outside.

Thanks to its precisely selected geometry and flexibility, the seal works with factory mounting points, ensuring a stable fit against the hood edge and front body components.

Benefits of using an original Audi seal

Using an original seal from the Gaskets and sealing rings category allows for maintaining factory sealing parameters and body panel fitment. In practice, this means:

• better protection of the engine bay against moisture and dirt,
• reduced risk of corrosion in critical points of the front body section,
• maintaining an even contact line between the hood, fenders, and front panel.

For the user, this translates into more predictable operating conditions and the maintenance of a consistent front-end appearance, which is particularly important in luxury vehicles such as the Audi A8.

Installation and operational characteristics

The hood seal designed for installation in the front of the vehicle is a component that undergoes stress every time the hood is opened and closed. For this reason, it is important to ensure:

• correct positioning on the edges of the front body,
• even pressure along the entire contact length,
• no twisting, kinking, or excessive tension during installation.

A properly selected seal also helps to reduce unwanted hood vibrations at higher speeds, which affects acoustic comfort and the stability of front-end components.

Condition of the item and service application

The presented seal is a used part, making it an attractive service solution for users looking for parts with factory fitment at a reasonable price. It can be used both for standard replacement of a worn seal and for post-accident repairs of the vehicle's front end, when it is necessary to restore proper sealing and hood alignment.

Expanding the scope of service work

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other items from the same group, such as additional cover seals, edge seals, or sealing rings, check the available parts in the Audi Gaskets and sealing rings category.

For drivers who are also dealing with the vehicle's steering system maintenance, a practical guide describing the operation and typical failures of the steering and power steering system may be helpful – you can find it in the article Steering and power steering system – how it works and what breaks?.