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Forum: General Q & A

08-19-2011, 12:39 PM

Replies: 30

Correct plug for stock 454 Mag MPI?

Views: 24,192

Posted By Dennis Moore

Check out E-Bay 160366655037 for more info on...

Check out E-Bay 160366655037 for more info on spark plugs for your 454 Mercruiser.
Dennis

Forum: General Q & A

08-12-2011, 01:09 PM

Replies: 30

Correct plug for stock 454 Mag MPI?

Views: 24,192

Posted By Dennis Moore

I suggest Champion RV15YC4 spark plugs for an...

I suggest Champion RV15YC4 spark plugs for an upgrade to the 454 Mag.
They are an extended tip plug and will increase performance and fuel economy. They are designed to be gapped at .045 inches and...

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