Yamaha - Air shroud, cylind - 7HD-E2652-00-00 Yamaha-F40-2003 All current Mercury/Mariner Outboards 6

All current Mercury/Mariner Outboards 6 HP and above (without power trim)

Chap plate

90179-16002-00 - NUTWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer

And when that switch starts to fail

Yamaha - Air shroud, cylind - 7HD-E2652-00-00 Yamaha-F40-2003 All current Mercury/Mariner Outboards 6Yamaha Air Shroud Cylinder Cooling System Component 7HD E2652 00 00 Overview Air shrouds are easy to overlook, but they play a big role in keeping your engine temps where they should be. This one helps direct airflow around the cylinder so heat doesnt build up in the wrong spots. Ive seen engines run hotter than expected just because airflow wasnt managed properly. When everythings in place, the motor runs smoother and handles long runs without issue.