Jtewes Posted July 9, 2010 Report Share Posted July 9, 2010 Can someone tell me what spark plug goes in a 2005 Merc OPTI (175) horse? J Link to comment Share on other sites More sharing options...
Mountainman Posted July 9, 2010 Report Share Posted July 9, 2010 Dont know what the plug identifier is, but you got to go with NGK's....... Link to comment Share on other sites More sharing options...
Guest Posted July 9, 2010 Report Share Posted July 9, 2010 NGK's....175 OptiMax DFI6-cyl. 2-Stroke 2003 - 2006 - - IZFR5G Link to comment Share on other sites More sharing options...
Jtewes Posted July 11, 2010 Author Report Share Posted July 11, 2010 Thanks for the info :clap: J Link to comment Share on other sites More sharing options...
Hoss Posted July 11, 2010 Report Share Posted July 11, 2010 Make sure you get the right gap..... I'm not sure which one that model uses. Some use .032 and some use .040 I think. There is a motor section on BBC that has that info. Link to comment Share on other sites More sharing options...
Hoss Posted July 12, 2010 Report Share Posted July 12, 2010 Found the info on BBC... it gaps at .032-.033 Link to comment Share on other sites More sharing options...
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