Mercury - Quicksilver Water Pump Face Plate Kit Cooling System Component Durable Metal Construction 19700A2. Overview. Your outboard's cooling system depends on precision and flow, and the Mercury Marine 19700A2 Quicksilver Water Pump Face Plate Kit helps keep it running at peak efficiency. Built for Mercury 35-60 horsepower outboards, this heavy-duty metal face plate provides a solid, wear-resistant surface for the impeller to operate against. Designed and manufactured to Mercury's OEM standard