Bosch 0261231273 Knock Sensor

The Bosch 0261231273 Knock Sensor is a precision-engineered OE-quality sensor designed to detect engine knock and optimize ignition timing for maximum performance and engine protection. This sensor is mounted directly on the engine block where it monitors structure-borne vibrations using a piezoelectric measuring element to identify the high-frequency vibrations characteristic of engine knock or detonation.

Key Features:

• OE-quality Bosch engineering for reliable knock detection
• Piezoelectric sensor technology for accurate vibration measurement
• Helps prevent engine damage from sustained knocking
• Enables optimal ignition timing for improved fuel economy and torque
• Highly accurate and sensitive knock detection capabilities
• Designed for extreme temperature operation and long-term reliability

When engine knock is detected, the sensor transmits a signal to the ECU, which adjusts ignition timing to prevent damage to critical engine components like the cylinder head gasket and cylinder head. A failing knock sensor may cause a check engine light, engine hesitation, misfire, or audible knocking sounds. This genuine Bosch sensor ensures your engine management system receives accurate knock feedback for proper tuning and engine longevity.