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Spark plugs

Old 06-14-2019, 03:12 PM
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Default Spark plugs

I currently have champion Rv15yc4 spark plugs in my boat I’d like to replace with NGK spark plug. Does anyone know the equivalent spark plugs from the champion to ngk and where to buy?
Old 06-14-2019, 03:17 PM
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Just about any auto parts store will have what you need and catalogs with cross reference numbers
Old 06-14-2019, 03:21 PM
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What engine?
Old 06-14-2019, 03:25 PM
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Originally Posted by Dacman View Post
What engine?
Mercruiser 165 hp inline 6cylinder
Old 06-14-2019, 03:29 PM
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Did you google NGK? I'm almost certain they have online catalogs with cross reference to other mfg plugs as well as what plugs to match up to engines as well as marine engines. Again, all this info can be found at your local auto parts store
Old 06-14-2019, 03:30 PM
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Originally Posted by chuck34 View Post
Just about any auto parts store will have what you need and catalogs with cross reference numbers
That would be too easy but wouldn't generate 17 pages of debate about which plug is best.
Old 06-14-2019, 03:35 PM
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Why ?
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Old 06-14-2019, 03:38 PM
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https://www.google.com/search?client...v15yc4+to+ngk+
Old 06-14-2019, 03:47 PM
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I don’t know about anyone else, but I have always had best luck putting autolight plugs in a Ford, AC, Delco in GM products. Typically replace with what the factory put in it for brand.
Old 06-14-2019, 04:01 PM
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I've always be a big NGK fan, Not a fan of Champion, in fact, I wouldn't use them if given to me.
Old 06-14-2019, 06:15 PM
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People can certainly get emotional about the lowly spark plug
Old 06-14-2019, 07:17 PM
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I've heard bad things about the champion from the local parts guy. but I don't know how much of a difference it really makes.
Old 06-14-2019, 07:20 PM
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Originally Posted by tmd11111 View Post
That would be too easy but wouldn't generate 17 pages of debate about which plug is best.
Ahh yes. I don’t want to look up the answer; would you mind doing it for me?
Old Yesterday, 07:11 AM
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Default Help need plugs

Originally Posted by Roach12 View Post
I currently have champion Rv15yc4 spark plugs in my boat I’d like to replace with NGK spark plug. Does anyone know the equivalent spark plugs from the champion to ngk and where to buy?
I'm trying to find spark plugs for mercruiser 5.7L EFI bravo 3 motor. Can't seem to find what kind of plugs it uses.
Old Yesterday, 07:16 AM
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Originally Posted by Longducdong826 View Post
I'm trying to find spark plugs for mercruiser 5.7L EFI bravo 3 motor. Can't seem to find what kind of plugs it uses.
Take one that’s currently in your motor to your local automotive shop and they should be able to tell you or they can cross reference it for you if you’re looking to get a different brand.
Old Yesterday, 03:36 PM
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Thanks I will have to go that route.
Old Yesterday, 04:24 PM
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Originally Posted by chuck34 View Post
I've always be a big NGK fan, Not a fan of Champion, in fact, I wouldn't use them if given to me.
unless you own an OMC/BRP outboard motor of course.
Old Yesterday, 04:37 PM
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Originally Posted by Longducdong826 View Post
I'm trying to find spark plugs for mercruiser 5.7L EFI bravo 3 motor. Can't seem to find what kind of plugs it uses.
Welcome to the forum .
For future reference. Start your own thread when asking questions not related the the original posters situation.
It makes for confusion.
Hijacking the topic.
Just to note , no biggie!

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