Yamaha - Muffler 1 - 67C-14711-11-5B Mercury Outboard 25W-40 Synthetic Oil Not at all — it’s

Not at all — it’s a direct-fit OEM part that installs easily with standard tools

quick to replace

Fuel Pump Operation Support – Moves with pressure changes to help pump fuel efficiently

while freshwater slows things down quite a bit

• Built for Long Term Durability – Engineered to perform in demanding engine environments

Yamaha - Muffler 1 - 67C-14711-11-5B Mercury Outboard 25W-40 Synthetic Oil Not at all — it’sThis product has been superseded by: 67C 14711 12 CA 67C 14711 11 5B MUFFLER 1WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.