Yamaha - Z300 water intrusion kit - 90891-40689-00 Mercury Marine Mariner Nickel Gray Paint 9 HP Command Thrust engines

9 HP Command Thrust engines (2005 & newer)

An OEM Quicksilver filter gives you tested reliability

The Yamaha Fuel Additive & Stabilizer (SKU: MAR-CARBC-FC-25) is easy to use and compatible with a variety of Yamaha outboard models

Fits Alpha One Gen II

and backing spacers required for a secure through-hull deck installation

Yamaha - Z300 water intrusion kit - 90891-40689-00 Mercury Marine Mariner Nickel Gray Paint 9 HP Command Thrust enginesYamaha Z300 Water Intrusion Kit Engine Protection Kit 90891 40689 00 Overview Water intrusion is one of those problems you dont want to discover the hard way. Ive seen Z300 setups where everything looked fine on the outside, but moisture got in and caused bigger issues down the line. The Yamaha Z300 Water Intrusion Kit 90891 40689 00 is built to help prevent that before it starts. Its a smart add on if youre running hard or spending a lot of time in