SEI MARINE PRODUCTS- Yamaha Water Pump Kit 61A-W0078-83 150 175 200 225 250 300 HP 2 Stroke 4 Stroke This water pump kit replaces OE#: 61A-W0078-83 and 61A-44311-00 and fits standard rotation and counter rotation 2.6 liter / 2 stroke ( 150, 175, 200, 225 HP), 3.1/ 3.2 liter / 2 stroke (200 HP and up) and 4 stroke (150 HP and up) Yamaha outboard lower units from 1991-current. Does NOT fit lower units with low-water pick-ups.