Originally Posted by talisman311
Anyone know what the copper plug model number would be? Before anyone chimes in that you should use double plats of iridium, I figure..it'll take me less than 1 hour to perform the work and NGK coppers go for 2 maybe 3 dollars. I enjoy working on my car and copper gives you a better spark too. This is what I've done on my infiniti for the past 2 changes, and have to say, I'm pretty happy.
According to Sparkplugs.com NGK does not make a copper plug for the 330i. Denso does model number K20HR-u11.
I agree these are easy to change but since the car was designed for iridium, not sure that copper is the best way to go but according to the sparkplugs.com site the above listed model will work. If you decide to go this route let us know how it works out.