Which is the correct plug for my merc?

[greghh]

I have a 1985 mercury 25 hp motor. Almost every book I look at shows a different number plug for it. Some even show that V type plug which is that unconventional type that just has a center electrode. Any help would be great...Thanks.

 

[corm]

Re: Which is the correct plug for my merc?

Hi Greghh,<br /><br />The newest work the best all around.<br />NGK BP8H-N-10....gaped at 0.040 in.<br /><br />corm

 

[ODDD1]

Re: Which is the correct plug for my merc?

ya, corm's right ...newest spec plug is BP8HN-10

 

[fone_man]

Re: Which is the correct plug for my merc?

1985 MERCURY 25 XD 25.0 hp<br /><br />BP8H-N-10 # 4838 # .040 <br /> http://www.ngksparkplugs.com/apps/watercraft/