Fitment: Honda Accord 19982002, DX/EX/LX with 2.3L inline4 gas engines or 3.0L V6 gas engines. For more models please refer to the following content. Accurate knock detection This sensor monitors engine vibrations to detect abnormal combustion. It helps protect the engine from longterm damage by identifying irregular firing patterns. It supports realtime adjustments to improve performance and efficiency. Smooth ignition timing Provides precise input to the engine control unit to optimize ignition timing based on engine load. Contributes to stable acceleration and smoother driving by ensuring combustion happens at the ideal moment. Prevents costly engine damage Early detection of detonation helps prevent misfires and engine wear. Aids in maintaining fuel efficiency and minimizes the risk of overheating or power loss during operation. Use scenarios Daily commuting: Maintains engine reliability and efficiency during regular city and highway driving. Under load or driving uphill: Supports stable performance and smoother response when the engine works harder. Long trips or extreme conditions: Helps protect the engine during extended operation and varying temperatures, reducing the risk of detonationrelated issues.