Replace this sacrificial anode every season if you're a salt water boater and you do not have the ability to flush your engines after each use, such as when your boat is stored in a marina and the crew that stores your boat is not very familiar with Yamaha flush procedure.
Replace every 2 years if you flush consistently after each use.
FITS ALL YAMAHA BOATS 2007-Current EQUIPPED WITH 1.8L, 1.9L, MR1, and TR-1 ENGINES
