Mercury - ECM - Fits 2003-2007 Black Scorpion Tow Sports & 2008 Scorpion 350 - 77-865155T06 Yamaha F60 Outboard Parts & Service Kits for 2006 to Current Models Your engine cooling passages are

Your engine cooling passages are fractions of an inch even on larger HP models as well as the associated hardware such as thermostats and check valves are all susceptible to clogging and fouling

Q3: How do I confirm it’s the correct kit for my engine

it’s easy to read in any lighting and matches Mercury’s modern gray-face gauge line

With an OEM harness

Mercury - ECM - Fits 2003-2007 Black Scorpion Tow Sports & 2008 Scorpion 350 - 77-865155T06 Yamaha F60 Outboard Parts & Service Kits for 2006 to Current Models Your engine cooling passages areFits: 2003 2007 Black Scorpion Tow Sports (s n 0M391600 0W698432) 2008 Scorpion 350 (s n 0W698433 1A091517) WARNING: 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.