5.9L sparkplugs

[KNOMONEY]

What's the hot Autolite sparkplug for the 5.9L? The regular is #5224, I think.

[HankL]

The Autolite 3924 or colder 3923 is the plug that get best reviews. The 52xx series has a longer 'projected' tip.

I have written a FAQ on sparkplugs that is at:

http://www.dodgetalk.com/forums/showthread.php?s=&threadid=425&highlight=FAQ

It is long and has probably more than you may want to know. Just about every plug that will fit is covered.