Mercury - MP Alert Warm Fusion Oval Bezel Trim Ring Accessory 8M0138978. Overview. The MP Alert system is designed to stand out for safety-but the hardware around it can still look clean and factory-correct. The Mercury 8M0138978 Warm Fusion Oval Bezel gives your MP Alert light a finished, color-matched look that blends seamlessly with Warm Fusion cowls on select FourStroke models. It frames the oval MP Alert light with a smooth, OEM-fit trim ring that complements the engine instead of distracti