Spark Plugs..which ones do I need?

1991 Mercury 2.5L 200L / #0D063357

I'm having a diffifult time finding a chart of the net.

Thanks for the help. http://www.bassboatcentral.com/boardstuff2/beers.gif

bu8h i do believe

NGK- BU8H is the correct spark plug for this engine.

It's a surface-gap plug (so there is nothing for you to "gap"). http://www.bassboatcentral.com/smileys/wink.gif

Thanks again http://xs-s.com/zf/images/smile/emthup.gif