me personally i would have stuck with the densos never heard of autolite iridiums.

 

I didn't think anyone but NGK and Denso could make an iridium plug yet... patents my friend... hmmm... need to do some digging on that one...

 

please do, because i'm pretty sure that autolite doesn't make a plug that fits, but you never know.

 

autolite specializes in copper core if they do iridium thats cool but be weary about it and at the first sign of problems pull them....I dont know about that patent thing w/ the iridium but it can be swayed w/ design and MFG not the materials used. I think the silverstones were Iridium too. AC Delco makes Iridium plugs ,UberPower makes em, HKS Makes em , they even cross reference copper and iridium, nickel castings and more. SO its all in the design.

 

Good info, Cuz

 

sounds like knock offs to me but thats just my 2 cents.