Mercury - Quicksilver 817275A09 Water Pump Repair Kit Mercury Verado 4-Cylinder 135-300HP, EFI & Pro XS Outboards 817275A09. Overview. A strong cooling system is the backbone of engine longevity, and the Quicksilver 817275A09 Water Pump Repair Kit keeps your Mercury Verado 4-cylinder outboard (135-300HP) running cool and protected. This OEM kit also fits 135-200HP EFI and 200-300HP Pro XS outboards, providing everything you need to rebuild your water pump and restore full factory-level cooling p