46399 Mercury/Mercruiser Racing Trim Tab  Zinc Anode 822777

Base Diameter: 3-1/2"
Overall Height: 3-1/2"
Threaded Mounting Hole: 7/16"-14
Weight: 1.0 lbs

Fits Alpha I Gen 1, Gen 2, Mercury 50 - 140 HP, Mercury 225 250 EFI Motors

Used as an alternative to 31640 anode where extra clearance is required for high rake propellers.

Zinc is for saltwater use