Malibu M Series Knock Sensor - OEM Engine Detonation Sensor Malibu Engine "Tent Poles" allow the cover

"Tent Poles" allow the cover to be raised at critical boats along the cover to prevent water from pooling on the cover

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and ideal for any marine engine where 5W-30 is recommended or specified

PCM updated Oil Specs: 10W-40

This is a full diagram of the soft grip top deck for a 2021 M240

Malibu M Series Knock Sensor - OEM Engine Detonation Sensor Malibu Engine "Tent Poles" allow the coverRestore smooth, reliable performance in your Malibu M Series engine with this genuine Malibu Boats knock sensor. Designed to detect engine knock (detonation) and send a precise signal to the ECU, this sensor helps the engine maintain optimal timing for strong power, efficient operation, and added protection under loadespecially important for watersports use. Application: Malibu M Series engines (verify fitment by engine ECU requirements) Function: