Spark Plug Part #???

phycobob

Registered User
Ok, Im picking up some Iridium plugs...want to know if the numbers are right. For Denso, its IT20...I know that. But I can only find them in sets of 4, and $H!T they are spendy, like $45 per 4! I found 6 NGK Iridiums (TR55-IX) for $36. Is that the right plug number for our cars? Says its gapped at .050 and I read a post where someone was using that type. Does anyone know for sure?
 
The correct # is TR55-1IX. I've got a set and am very pleased with them. Did they add any power????? They certainly don't misfire. The .050 gap is fine. Use a beveled gauge to set them as the center electrode will break if stressed.
 
I put the Densos in as gapped..And no problems whatsoever with spark blowing out:O)..Sparkplug.com..Can get individual plugs tehre
 
My opinion Denso all the way...What can I base that on..ABSOLUTELY NOTHING!!..Just that Ive used Denso with only good results:O)
 
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