The Delphi Volkswagen Knock Sensor - AS10169 is a high-quality automotive sensor designed specifically for Volkswagen vehicles. It is used to detect engine knock or detonation, which is a potentially damaging condition that can occur when the air/fuel mixture in the engine's cylinders detonates prematurely. This sensor is essential for ensuring the proper functioning and longevity of the engine. It is manufactured by Delphi, a trusted brand in the automotive industry, and is designed to meet or exceed OEM specifications. The AS10169 knock sensor is compatible with various Volkswagen models and is a reliable and durable choice for any vehicle owner.