I would like to know on what brand of spark plugs you guys use in your 4.7L Magnum engine.
I replaced the factory Champion spark plugs and put in Bosch platinum 2 and it seems like it just uses more fuel.
What Brand and type would you recommend I put in??

Any help will be greatly appreciated.
Thanks in advance,

 

the 4.7 have spark plugs?

Most people run the autolite plus i do not remeber the numbers. Theses moters do not seem to like platinum plugs.

 

usethe champions, work great, do a search its covered about 10 times in the past...

 

Actually I am running Champion double platinum and am getting +1 mpg.

 

Autolite

they have been using them in Chryslers for a LONG time

heck, they used them in ****** WWII jeeps

 

Champion Double Platinum, and I won't use anything but.

 

I had been running autolites but I wasn't really impressed with them. The manual calls for Champions (but what does the manual know).

I'm running NGK Irridiums right now. They seem to be doing well. Expensive little bastards though...