Mercury - Zinc Trim Tab Anode Plate Corrosion Protection Marine Zinc 98432Q6. Overview. Every boater knows the quiet relief that comes from stepping back and knowing your engine is protected, even when you're miles from the ramp. The Quicksilver 98432Q6 Zinc Trim Tab Anode Plate delivers exactly that kind of confidence. It's a small component with a big job-standing guard against corrosion so your Mercury or Mariner outboard can keep doing what it does best. When the water gets rough or the hour