Trim Tab Anode For Mercury Marine Outboard Engines 40 To 140 HP Replacement Zinc Alloy Fits Mercruiser Quicksilver 31640 Q4 A1 46399 A1 822777 Q1 72436 A1 18 6241

Trim Tab Anode for Outboard 40-140 HP, Zinc Alloy
✔️ Replaces OEM 31640Q4 family; fits 40-140 HP outboard engines.

This trim tab anode is designed for Mercury Marine outboard engines in the 40-140 HP range, providing galvanic corrosion protection for aluminum surfaces and extending life in salt or freshwater use. It replaces OEM numbers such as 31640, 31640Q4, 46399, 822777, and 72436 for MerCruiser and Quicksilver installations.

✅ Engine: 40HP-140HP Outboard
✅ Engine Position: Outboard
✅ Material: Zinc Alloy
✅ Color: Silver
✅ OEM replacements: 31640, 31640Q4, 31640A1, 46399, 822777, 72436

💡 What is a trim tab anode used for in outboard engines?

It's a handy corrosion-protection piece that helps shield aluminum parts in saltwater environments, extending life and reducing maintenance.

- corrosion protection for aluminum and lower-unit hardware
- OEM part numbers ensure proper fit and easy replacement
- improves durability in saltwater outboard use
✝️