NEW Speedo Fitting and Sealing O-Ring. These do not come individually packaged since they come to us in bulk. You will receive one Speedometer Fitting part number 3883719 and one o-ring part # 976106. This is the fitting that mounts to the bell housing of MANY SX and Duoprop transom assemblies starting around 2007 (may vary a little depending on where your boat was on the assembly line). It connects the water passage on the bell housing to the pitot hose. Please make sure the aluminum on the transom assembly is clean and not badly corroded. Part should "snap" into place. IF NOT INSTALLED CORRECTLY IT WILL POP OUT