Most of my experience is with the Denso IK20 iridium plug for the Alfa 24V engine. The lookup feature on sparkplugs web site lists the Denso iridium IW20 for all of the 12V V6 engines.
I recall that the 164 V6 2.0 turbo manual only listed a Lodge plug that I could not cross reference. I found that the 166 owners manual listed an NGK plug for the same V6 2.0 turbo engine. I was able to cross reference this plug over to a Denso Iridium, IW24. Anyway, the home page of my favorite spark plug vendor has a good cross reference utility. You can input a factory recommended plug and should be able to then find a modern iridium plug number. Looks like many brands offer iridium these days. I have to strongly recommend iridium plugs, results vary by brand. http://sparkplugs.com/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Wednesday, April 28, 2010 8:25 PM To: [email protected]; [email protected] Subject: Re: [alfa] My GTV-6 has developed a "miss"/irridium spark plugs Hi Ken, I've recently been running Bosch platinum single electrode plugs in the Berlina and they don't seem to last all that long. I have some 4 electrode plugs I'm going to try next. Would you mind providing heat range/part numbers for the two iridium plugs? Is there a Denso or an NGK iridium that works in a 2 liter quattro banger? I'm also intrested in the plugs for a 6. Stevan Thomas 73 Berlina Veloce 84 GTV6 -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
