VAG Knock Sensor 03H905377A

The VAG Knock Sensor, part number 03H905377A, is a critical component designed to monitor and identify engine detonation or 'knock'. This phenomenon occurs when the fuel-air mixture ignites prematurely in the combustion chamber, leading to abnormal combustion and potential engine damage. Upon detecting knock, this sensor sends a signal to the engine control unit (ECU). The ECU then adjusts ignition timing and fuel delivery to prevent further knocking, thereby protecting the engine from harmful stress and ensuring smooth operation. This proactive measure is vital for maintaining engine longevity and efficiency. Replacing a faulty knock sensor is important for several reasons. A malfunctioning sensor can lead to poor engine performance, reduced fuel economy, and in severe cases, significant internal engine damage. This genuine VAG part ensures compatibility and reliable performance for your vehicle.

• Genuine VAG Knock Sensor
• Part Number: 03H905377A
• Monitors and detects engine knock (detonation)
• Signals ECU to adjust ignition timing
• Protects engine from potential damage
• Ensures optimal engine performance and efficiency
• Direct fit for compatible VAG models
• Helps maintain smooth engine operation