Mercury – Warning Horn Kit | Piezo Alarm Upgrade | 816492A9 Yamaha-T25C-2018 simply remove the flushing cap

simply remove the flushing cap and attach a hose to the Flush-M utilizing the included quick connector

This product has been superseded by 990C0-0084L-21P - SSPRPCR 3X15X21

Aluminum Stabilizer and Ski Boat Fin

It’s ideal for non-catalyzed Mercury four-stroke outboards

Mercury – Warning Horn Kit | Piezo Alarm Upgrade | 816492A9 Yamaha-T25C-2018 simply remove the flushing capMercury Warning Horn Kit Piezo Alarm Upgrade 816492A9 Overview A warning horn is one of the simplest but most important pieces of onboard protection. The Mercury 816492A9 Warning Horn Kit gives your engine a clear, reliable audible alert when something needs attentionoil, temperature, or other key engine parameters. This kit uses the newer piezo style horn, designed to work with later model remote controls and harnesses, and brings modern reliability