Sparks Plugs

[grmaro]

Hello I'm trying to figure out how to know if my plugs are standard or iridium my engine is a 150HP 2008 the #on my plugs are NGK IR IZFR6K 11 any help would be helpful Thank You Greg

 

[hondadude]

The IZFR6K 11 is an iridium. Never seen the IR in front of the number, but that probably is short for iridium.

Mike