Mercury - Piston assy-port - 765-7442A40 Yamaha-F40A-2010 and better fuel efficiency

and better fuel efficiency

The Mercury 853830001 Primer Plunger plays a small role

Bringing both engines up together is quick and clean

Yamaha - Float Chamber Body 1 - 7RA-14181-00-00

A thermostat that works properly keeps your outboard in its sweet spot—warm enough to run efficiently but cool enough to last

Mercury - Piston assy-port - 765-7442A40 Yamaha-F40A-2010 and better fuel efficiencyThis product has been superseded by: 765 840432A3 Piston assy portWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or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.