The Carquest SBC3858 Knock Sensor is a high-quality ignition system component designed for vehicles. With OE/OEM part numbers from various trusted brands like Volkswagen, Duralast, and Airtex, this sensor ensures reliable performance and accuracy. Manufactured by Carquest, a trusted brand known for quality automotive parts, this knock sensor is a durable and efficient addition to any car or truck's ignition system. Upgrade your vehicle with this premium Carquest knock sensor to improve overall engine performance and avoid costly repairs.