Delphi AS10277 Knock Sensor

The Delphi AS10277 is an OE-quality knock sensor designed to detect engine detonation and pre-ignition events, protecting your engine from harmful knock conditions. Delphi, a trusted original equipment supplier to major automakers, engineers this sensor to meet or exceed OEM specifications for reliable, long-term performance.

The knock sensor monitors vibration frequencies produced by the engine block and sends a signal to the engine control module (ECM). When knock or detonation is detected, the ECM adjusts ignition timing to eliminate the condition, safeguarding engine components and optimizing combustion efficiency.

Key Features:

• OE-quality construction meeting or exceeding original equipment specifications
• Precision-engineered piezoelectric sensing element for accurate knock detection
• Designed for direct OEM replacement — no modifications required
• Resistant to heat, vibration, and engine fluids for long service life
• Helps restore proper ignition timing control and engine performance
• Manufactured by Delphi, a leading global OE and aftermarket supplier

Replacing a faulty knock sensor with the Delphi AS10277 can resolve symptoms such as a Check Engine Light, reduced engine power, poor fuel economy, and rough running. This sensor installs as a direct replacement for the original unit, making the repair straightforward for professional technicians and experienced DIYers alike.