SEI MARINE PRODUCTS- Mercury Mariner Water Pump Kit 46-43024A7 This water pump kit replaces OE#: 46-43024A7 and fits 2 stroke inline 3-4 cylinder 50-125 HP and 4 stroke 50-150 HP Mercury and Mariner outboard lower units from 1987-current. Only fits big foot models of the 50-70 HP Models Big foot models measure 4-1/4 outside to outside on the round portion of the case by the prop. If your unsure of fitment, please contact us with your engine serial number.