SEI MARINE PRODUCTS- Evinrude Johnson Water Pump Kit 0438579 70 & 75 HP 2 Stroke 3 cylinder 1975-1978 This water pump kit comes with a woodruff key, includes the housing, replaces OE#: 0438579, and fits Evinrude Johnson outboard lower units with the following applications: 70 & 75 HP 2 Stroke (1975-1978) Large 4-1/6" Bullet diameter case only.