I ordered the wrong IAC Valve - brand new and never installed. $20 delivered to your door. The part # is AC147 and cross references to Mercury #803149. Great to have for a spare...

Here is the Rock Auto spec info:

http://www.rockauto.com/catalog/x,ca...,parttype,6072

I needed the valve listed at the top (specific to my 1998 454 MAG).

Long time lurker - 1st post - go figure.

Thanks!