Bosch Engine Knock Sensor

The Bosch Engine Knock Sensor (also called a detonation sensor or knock detection sensor) monitors engine vibration and reports it to the engine control unit (ECU). The ECU uses this signal to detect pre-ignition and detonation ("knock"). It then adjusts ignition timing to protect the engine and keep it running efficiently.

Key Features:

• Piezoelectric sensing element detects engine block vibration and converts it into an electrical signal for the ECU
• Helps the ECU retard ignition timing when knock occurs, which protects pistons, rings, bearings and other internal components
• Supports smooth drivability, fuel efficiency and emissions control
• Built to meet Bosch's original equipment quality standards, with the durability to handle heat, vibration and exposure to engine fluids
• Designed for a secure fit and reliable electrical connection

A failing knock sensor can cause a check engine light, reduced power, poor fuel economy, hesitation or engine pinging. Replacing a worn sensor with a Bosch unit helps restore proper engine management and protect the engine. Bosch is a leading global supplier of automotive technology and original equipment sensors. Select the correct part number for your application from the available options.