Mercury - Quicksilver 823912002 Aluminum Anode Mercury 25-50HP EFI, SeaPro & Lightning Outboards (2006 & Newer) 823912002. Overview. The Quicksilver 823912002 Aluminum Anode keeps your Mercury 25-50HP EFI, SeaPro, and Lightning outboards protected from galvanic corrosion. Designed for model years 2006 and newer, this OEM anode acts as the sacrificial metal that takes on corrosion before it can damage your outboard's gearcase or internal components.. Made from high-quality marine aluminum, it del