Quicksilver/Mercury 79-895288Q23 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. Black rim, white background with black numbers/graduations. List price $56.70. Our price $41 plus freight.