Mercury – Flame Arrestor | Inboard & Tow Sport Series | Marine-Grade Metal | 8M0113519Mercury Flame Arrestor Inboard & Tow Sport Series Marine Grade Metal 8M0113519 Overview Out on the water, peace of mind comes from knowing the heart of your boat is protected. When you throttle up and hear that deep, steady tone from your engine, you want to trust that every component is doing its job quietly and reliably. A flame arrestor might not be the part you think about often, but when its working right, you feel the difference in confidence