Spark plugs for 05 optimax 225

[Footballfanatic8007]

I’ve searched for a while now trying to find the right spark plugs for my 05 Mercury optimax 225. Everywhere I look is different and I don’t want to use the wrong ones for sure, anyone know what It calls for now days? And if so can they be found at an auto parts store or just strictly marine places.Thanks!

[Shadowrap]

NGK IZFR5G Those are what you want.

[bassinvol]

BATTERY RECOMMENDATIONS:

In a fishing application with today's electronics/pumps/graphs, I strongly recommend a MINIMUM of 1050 CCA capacity for the cranking battery.

http://www.bbcboards.net/mercury-3-l...ed-3-15-a.html
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Spark Plugs:
-QL77CC (Champion) for 3 Liter EFI's (XB models or 2001 and EARLIER: .035" / All 2002-> Down-draft intake models: .040")
-IZFR5G (NGK)@ .032-.033" for Standard Opti's 135-225HP, 2001 200XS, and 200 ProXS PRIOR TO Serial Number#1B912786***
-IZFR5J (NGK) @.032-.033 for 75-115 Opti's
-IZFR6J (NGK)for 150/175/200 ProXS (200 ProXS Serial #1B912786-up) & 225-250 ProXS and Racing XS Motors
-2006 & prior ProXS: .032-.033"
-2007 & up: .042-.044" gap for best idle performance. (150/175/225/250 ProXS/XS)
- 2007 & up 225-250 XS/ProXS can use NGK- IZFR6J (gapped to .042-.044") OR IZFR6J-11 (pre-gapped, currently a "factory only" plug)
-2007 & up 225 ProXS: .042-.044" (IZFR6J)
-175 ProXS: .042-.044" (IZFR6J)
*** 200 ProXS Models manufactured PRIOR TO 2/1/12 utilize IZFR5G(NGK) Plugs.
*** 200 ProXS Models manufactured AFTER 2/1/12 (Serial Number 1B912786 and later) will utilize NGK- IZFR6J (gapped at .042-.044") due to production changes in the engines.

[Footballfanatic8007]

Thanks for the information!

[SilverFox579]

Lots more info in the FAQ's too.