Mercury - Quicksilver 818298Q1 Aluminum Anode Power Trim Pump Assembly Mercury & Mariner Outboards 818298Q1. Overview. Salt and stray current are an engine's worst enemies, but you can fight back with the Quicksilver 818298Q1 Aluminum Anode. This small part protects your Mercury or Mariner outboard's power trim pump from corrosion before it has a chance to start.. Made from marine-grade aluminum and already drilled for quick mounting, it's built to take the damage so your trim system doesn't hav