correct spark plugs

durban

Master Chief Petty Officer
Joined
May 27, 2011
Messages
894
help needed for my m8ts 150 hp its from the 1973 some years round there the last 2 no,s in the serial no is 99 , any info would be appreciated , many thaks
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,140
Re: correct spark plugs

Not sure I can verify the year from that info. Normally those inline sixes used Champion L-76V or L-78V. A Champion application chart will narrow it down further, if you can decide on the year. My '77 Merc 1500 called for Champ L-76V or NGK BUHW. Of course the '77 was slightly different in design.
 
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