Re: Mercruiser 3ltr & 3ltr lx
After some googling I found this.
The 3.0 L an LX have 2 different head designs....the smaller port lx head uses a 3/4" reach plug, the l uses regular 1/2" reach....I too have seen the wrong plugs in these motors, in both combinations...good thing these are relatively low stress engines...LOL....sometimes measuring thread depth in the head is the only verification you have....
Col
