I found four spark plugs in my cupboard after I had sold my boat, this is from a Yamaha F90 outboard, $15 for all 4, brand new, never used. I’m in Savage
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Are those the heavy ones?
Not sure, I didn’t know there were heavy ones or regular ones???
if those are the heavy ones those were banned back in 2007. i wouldnt want to be caught using them now days
if those are the heavy ones those were banned back in 2007. i wouldnt want to be caught using them now days
banned? for what reason?
I never heard of a spark plug being banned before, I bet it going to be one dandy of a reason.
if those are the heavy ones those were banned back in 2007. i wouldnt want to be caught using them now days
I know but I get +500 rpms and an additional 6mph with the heavy ones.
I know but I get +500 rpms and an additional 6mph with the heavy ones.
Yea most people don’t know about them. For $15 you should buy them just to keep on the shelf for spares. There pretty rare to find now days
Yea most people don’t know about them. For $15 you should buy them just to keep on the shelf for spares. There pretty rare to find now days
Can you explain why they are banned? Seems perplexing to me. I did some interweb surfing and couldnt find anything about it.
I call BS 
They were banned because Merc found out they would make a 9.9 run like a 15. Hp.
JK,they do fit several small Merc 4 strokes though.
As eelpout mentioned, the heavy plugs improved performance which led to people burning down engines. The engine manufactures did not like the heavy plugs because they were having to replace more parts under warranty and eventually got them banned
Do they come with a box fan? Asking for a friend.
Are they past their “Best used by date”? (sarcasm)
Good price though, save about 50%.
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