1999 Johnson

[Ghostshad]

 I have a 1999 Johnson 225 HO , what plugs should i use & what gap.  GodBless & Thanks

[Jm526]

Plug: QL78YC 

gap: 0.030

[Way2slow]

Good thing he answered because I would have told you the wrong ones.  I rarely deal with stock motors and I run the 77's, a little colder plug, and that was the first number that popped into my head..

[Ghostshad]

Any certain brand ?  Do they make a marine plug ?

[Ski213]

I've been told champion is the only way to go. 

[Way2slow]

Champion is the only ones I run.  As for marine, the only difference is the marine plugs has a SS base.  I've actually never paid any attention if the ones I get are regular or SS.  They usually get swapped out each year anyway. 

[Jm526]

I prefer NGK all day. I run those in everything I own. 

[riverbasser]

I buy champion but have bought motors with NGK installed and never had an issue with either

[Jm526]

20 minutes ago, riverbasser said:

I buy champion but have bought motors with NGK installed and never had an issue with either

It's all preference

[lonnie g]

if you upgrade power pacs or coils  some of them require different heat range on plug