Mercury Aluminum Trim Tab Anode, 30HP-200HP Outboards & MerCruiser Drives 31640T4

Mercury Aluminum Trim Tab Anode 31640T4 is a genuine OEM replacement designed to protect compatible Mercury and Mariner outboards and MerCruiser sterndrives from galvanic corrosion while also providing hydrodynamic trim force to aid steering. Regular inspection and replacement of the trim tab anode helps protect the gearcase and maintain reliable performance in both freshwater and saltwater environments.

Compatible with the following (except Bravo drives):

• Mercury & Mariner 30HP-200HP outboards
• MerCruiser sterndrives

This aluminum trim tab anode is manufactured to Mercury Marine's OEM specifications for proper fit and corrosion protection. As the sacrificial anode wears, it helps protect valuable underwater components from galvanic corrosion, extending the service life of your lower unit or sterndrive.

For proper installation, verify that the trim tab provides adequate propeller clearance and does not interfere with propeller operation. Inspect the anode at least annually and replace it when significant material has been consumed.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.