Mercury - Quicksilver Aluminum Anode Plate Corrosion Protection Mercury, Mariner, Force & MerCruiser Drives 76214Q5. Overview. Corrosion doesn't take a day off - but with the Mercury Marine 76214Q5 Quicksilver Aluminum Anode Plate, your outboard or sterndrive gets constant protection. This flat anode fits the anti-ventilation plate cavity on Mercury and Mariner 35-300HP outboards, Force 90-100HP outboards (1995 and newer), and MerCruiser Alpha One Gen II and Bravo I, II, III, X, XR, and XZ drive