Performance Metals Navalloy® aluminium Trim Tab Anode used on most Mercury and Mariner outboards 35hp and up and Mercruiser Alpha 1 outdrives. Replaces Mercury 31640Q 4 and Honda 41107-ZW1-003ZA.
This anode includes the exclusive, patented "red spot" wear indicator and is manufactured to the military specification MIL-DTL 24779, making it suitable for use in all water types - salt, brackish or fresh. This product comes with mounting hardware and installation instructions.
Note: Aluminium anodes are supplied as standard with Mercury and Mercruiser drives. Use of zinc anodes will invalidate the warranty.
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