yeah, www.sparkplugs.com sells BOTH ngk and denso iridium plugs, sorry, but you're wrong jongtr.

go to
this page to get the ngk numbers

i don't know the page for denso

hope this helps
btw, champions are for my 5hp briggs gokart engine, not a tib. they came in mine stock. ewww. i'm running just normal ngk v-power. i like them. stay far away from bosch +4's.

 

Turbulence,

Do you or anyone know how to get the NGK Iridium part #'s? NGK's site only listed the regular, platinum, and V-power part #'s. Maybe I should just give them a call...