When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
NGK is the best... but I'm biased... ha-ha... as long as it's not Champion you are in a whole lot better place!!!! Denso makes a good plug too, but I'd stick with the NGK's... ha-ha...
if you have the proper voltage... opening the gap is fine ;-) it actually helps the flame propogation... however, you have to be careful of voltage sparking to the metal shell vs. the ground electrode if you open the gap too far... also, I think iridium plugs from NGK come pre-gapped and shouldn't require regapping... just some FYI for ya...
I have no idea, I ordered them from NAPA, and I just said NGK Iridiums...I can check the reciept and Im picking them up tomorrow, all I know is that the reciept says they are gapped .052