ok well there seems to be a problem

i have a 2004 dak with a 3.7L and i took peoples advice ehre and got some 3923 autolites..

but the spark plug is to wide... [:@]

i need to use the bigger plug socket compared to the champions that i have...

so what gives? did i get the wrong plug? it says autolite 3923-6 on it...and its just the plain copper ones...

 

If the 3923's are the 15/16 plugs, they definately won't work in a 3.7. They have to have the 5/8 plugs.The OE is actually NGK as opposed to Champion like most MOPAR vehicles. Was it time for a tune-up or are youhaving some driveability problems?

 

according to the autolite website, 3923's or 5224's are the ones that fit your truck

 

The hex size shouldn't matter...but the 3923 plug has a 5/8" hex anyway...which is what your original Champion plugs have if I'm not mistaken. What about the plug is "too wide"? Are you sure you got the standard 3923? From what I see on Sparkplugs.com, the 3923 DOES have a 5/8" hex.

 

i know some of the 4.7 guys are running the 3923's so they should also fit the 3.7's. are you sure they're the right plugs? im not too sure what the 3923-6 is all about, the ones i used to have just said 3923 on the box.

 

If I remember right, the -6 is just the suffix on a box of 6 plugs

 

bahaha

i got ngk plugs [&:]

swapped them in and OMG no shaking at idle
sweet power
good acceleration
loving the autolites