Is your Audi's check engine light on or is the engine 'pinging'? This FACET Ignition Knock Sensor (part #9.3044) is a genuine, high-quality European-made replacement compatible with Audi OEM part 06A905377B. The knock sensor detects harmful detonation (pre-ignition) in the engine cylinders and signals the computer to adjust timing, protecting your engine from damage and performance loss. Factory Parts is the official US importer for FACET, ensuring you get a 100% genuine part, not a cheap imitation. It's manufactured to strict OEM standards for high performance and durability. Installing a quality sensor like this is crucial for engine health. This part is specifically designed for certain Audi models – please verify compatibility with your vehicle's year and engine. Backed by a 100% satisfaction guarantee for a worry-free purchase.
