Fitment: For M13a M15a M16a engines (20052011), part numbers 18640, 78g10, 89054009 Key benefits Accurate knock detection Monitors engine vibrations to detect abnormal combustion, helping protect the engine from longterm damage. By identifying irregular firing patterns, it supports realtime adjustment for improved performance and efficiency. Supports smooth ignition timing Provides precise input to the engine control unit to help optimise ignition timing based on engine load. This contributes to stable acceleration and smoother driving by ensuring combustion occurs at the ideal moment. Prevents costly engine damage Early detection of detonation helps prevent misfires and engine wear. It plays a critical role in maintaining fuel efficiency and minimising the risk of overheating or power loss during operation. Key attributes Function: Engine knock sensor for accurate detection of abnormal combustion and timing optimization. Compatibility: Specifically designed for M13a, M15a, and M16a engines (20052011) with part numbers 18640, 78g10, 89054009. Performance: Supports realtime adjustments to improve efficiency, fuel economy, and driving smoothness. Reliability: Aims to prevent detonationrelated damage and misfires by timely signal to the control unit. Use scenarios Routine replacement on M13a/M15a/M16a engines during maintenance to prevent knockrelated damage and maintain engine health. Performance driving or heavy load conditions where precise ignition timing helps sustain smooth acceleration and efficiency. Fleet or dailyuse vehicles experiencing symptoms of misfires, detonation, or overheating, where early knock detection helps protect the engine and preserve fuel economy.