merc 850, plug change

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04whitetb

Seaman Apprentice
Joined
Apr 24, 2011
Messages
35
i have a 1977 merc 850,i need to change plugs.which brand is better,champion,ngk,a/c delco? any oppinion is appreciated. thanks.
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,105
Re: merc 850, plug change

NGK plugs are currently recommended. You need to look up the plug number, but it will be BUHW or BUHW-2
 
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