Engine Knock Sensor — 1Pcs Quickly detect engine knock and restore proper engine timing with this single replacement knock sensor. Designed as a straightforward replacement part, it helps the engine control unit (ECU identify detonation and adjust ignition timing to protect the engine and maintain performance. Key benefits Protects the engine: Detects abnormal combustion (knock or detonation) so the ECU can adjust timing and reduce the risk of damage. Restores performance and efficiency: Allows the motor control system to optimize ignition timing, which can improve throttle response and fuel economy after a faulty sensor is replaced. Simple directreplacement: Supplied as a single sensor (1Pcs) for one , making replacement straightforward and costeffective. What it does (functionality) Converts mechanical vibration from knocking into an electrical signal that the ECU uses to adjust engine timing. Provides consistent and reliable feedback to support smooth engine operation. Key attributes Quantity: 1Pcs — single replacement sensor. Construction: Durable sensor housing and mounting design suitable for engine bay conditions. Electrical interface: Standard sensor connector to transmit knock signal to the ECU. Performance: Designed to respond to engine detonation across normal operating range and deliver a clear signal for ECU processing. Size and fit: Compact sensor form factor suitable for installation at the engine block or cylinder head mounting point typically used by knock sensors. Verify fitment with your vehicle's OEM part number before . Use cases / applications a malfunctioning knock sensor that is causing check engine light codes related to knock detection, timing control, or fuel trim adjustments. Maintenance upgrade during engine repairs or rebuilds to ensure the engine control system receives accurate knock inputs. Diagnostic replacement when intermittent engine knock, pinging, or poor performance suggests a faulty knock sensor. Installation and compatibility notes Intended as a direct replacement sensor where the vehicle uses a standard knock sensor design. Confirm compatibility by checking your vehicle's OEM part number or consulting a mechanic. Installation typically requires removal of the old sensor, proper torque on the mounting bolt, and ensuring the electrical connector is fully seated. After installation, a diagnostic scan may be to clear fault codes and verify the ECU recognizes the sensor. Package contents 1 x Engine knock sensor (1Pcs) This singlepiece knock sensor is a practical replacement option to restore accurate knock detection and help maintain engine performance and longevity.