SEI MARINE PRODUCTS- Mercury Mariner Water Pump Base 46-96146A 6 46-96146A 5 80-200 HP 1972-1978 This water pump base replaces OE#: 46-96146A 6/ 46-96146A 5 and fits 80-150 HP inline 4 & 6 cylinder 2 stroke (1978-1988), and V6 2.0/2.4/2.5 liter 2 stroke (1979-current) Mercury and Mariner outboard lower units.