Side Pocket Anode – Aluminum Used on most Mercury Verado and Optimax, Mariner 35-300hp, and Force 90 and 120hp outboards.Performance Metals Navalloy® aluminum anodes are manufactured to the military specification MIL-DTL 24779 and are suitable for use in all water types- salt, brackish, or fresh.The anode includes the exclusive, patented “red spot” wear indicator.Replaces:Mercury # 826134Q. 2 required per outboard.Honda # 41109-ZW1-003