Quicksilver/Mercury 79-895288Q63 0-30 PSI Water Pressure Gauge Kit. Indicates outboard cooling system water pressure. For use on Mercury & Mariner 25-225 hp FourStroke, 135-300 hp except 3.0L V-6 1998 and earlier and 200/225 Optimax/DFI 1998 and earlier 2 stroke outboards and Force 75,90, and 120 hp outboards. Silver rim, black background with white numbers/letters. List price $55.30. Our price $41 plus freight.