Audi S8 D3 V10 Engine 9-10 Cylinder Block Ping Knock Sensor 079905377H

Audi S8 D3 V10 Engine 9-10 Cylinder Block Ping Knock Sensor is a specialized engine control system component responsible for the precise transmission of the knock sensor signal for cylinders 9–10. A properly selected wiring harness in this area is crucial for the stable operation of the V10 power unit, correct ignition timing correction, and protection of the engine against unwanted knocking. Choosing an original Audi component allows you to maintain factory operating parameters and high engine refinement.

Specifications and technical data

• SKU: 079905377H
• Mark: Audi
• Condition: Used
• OEM Part Number: 079905377H
• Substitutable numbers: 079905377H, 079 905 377 H
• Category: Other Engine Parts

Purpose and function in the engine system

The presented knock sensor wiring harness is dedicated to the Audi S8 D3 with a ten-cylinder engine, where it supports a specific pair of cylinders (9–10). Its task is to reliably transmit the signal from the sensor to the engine control unit, which enables:

• continuous monitoring of the knocking phenomenon,
• dynamic ignition timing correction for individual cylinders,
• reduction of the risk of mechanical damage to the power unit,
• maintaining proper engine power and flexibility across the full rev range.

Thanks to the correct wiring harness, the control system can operate under stable conditions, and the engine retains the dynamics and smoothness of power delivery characteristic of the S8 D3.

Harness construction and installation aspects

The knock sensor wiring harness for cylinders 9–10 has been designed for the specific architecture of the V10 engine in the Audi S8 D3. It includes appropriately selected wires, connectors, and shielding, which are intended to limit electromagnetic interference and ensure a stable measurement signal.

The most important installation features include:

• factory wire routing matched to the geometry of the V10 unit,
• connectors compatible with the original knock sensor and the main wiring harness,
• placement of mounting points facilitating correct routing of wires in the engine bay.

An element constructed in this way allows for service replacement without the need for installation modifications, which shortens work time and reduces the risk of installation errors.

Benefits of using an original Audi wiring harness

Using an original knock sensor wiring harness in the Audi S8 D3 translates into a number of practical operational benefits. First and foremost, it ensures consistency with the factory engine control unit, which minimizes the risk of diagnostic errors and incorrect sensor readings.

Key advantages include:

• maintaining the factory operating characteristics of the V10 engine,
• stable operation of the ignition system under heavy loads,
• better protection of the power unit against prolonged knocking,
• easier diagnostics in the event of potential faults (compliance with factory installation diagrams).

For users who drive their S8 D3 dynamically, a properly functioning knock sensor wiring harness is an essential element affecting engine durability and performance repeatability.

Product characteristics and condition

The offered element comes from the Audi brand and is assigned to the Other category, which means it is a specialized engine installation component that does not fall into typical consumable parts groups. The product is marked as used, which in practice means it comes from disassembly and has been verified for its suitability for further use.

For many users and workshops specializing in high-end models such as the S8 D3, using a used, original element is a reasonable compromise between repair cost and maintaining factory quality of workmanship and fitment.

Technical support and further Audi topics

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 additional harnesses, sensors, or service connectors, check the available parts in the Other Audi category.

For those interested in a broader context of technical solutions used in the sports variants of this brand, including differences in the construction of engines, braking systems, and chassis, an article describing these issues in detail may be useful: Audi RS vs other models – what is hidden under the hood and chassis?.