hi everybody, this subject has been talked about many times. once more please. what is a better replacement spark plug for the stock champion in 2003 4.7? am leary of platinums and stuff because of the price and the factory didnt use em.has anyone had any luck with plugs other than stock ? anyone use ngk or something? thanks for the help. rc

 

Time to use the search function. This topic has been covered more times than how big of tires you can put on a stock Dak.

 

yeah but it's easier to just recommend the autolite 3923's... just put a set in my 4.7 and think they work great.

 

Champion Double Platinum. Gained an extra 2-3mpg from them. Work awesome.

 

this really has been talked about alot on here...i have always heard the autolite 3923's in copper and now i am reading that the champions are as good or better. anyone know champions part numberequivilent to the autolite 3923?

 

I guess its just personal preference. Some like ford some like dodge. Some like Bosch, some like champion. Some just don't give a rats a$$