I would call your local dealer for a Part # or check Skidim i think it is, also Cyndi at Atlanta Marine is really good.
Location is or should be on the top of intake facing the rear of boat < front of engine > near the top by the thermostat.
Hopefully this Link works to a picture.
In this picture its on the Left right by the Hose that says Master Craft on it in Blue
This may not be the exact as yours as its a 94 engine but its close enough to show you what your looking for.
http://i639.photobucket.com/albums/u...psc4zut2s0.jpg
http://i639.photobucket.com/albums/u...psekd3fhfy.jpg