Spark plug information ?

[Mchabot001]

Hey guys !

Looking to change my spark plug on my '04 V8 4.7L

There is lots of choice but I really don't know wich one is the best

any opinion ?

Note* I prefer NGK then other brand. I used them for years in my boat, cars and other so I prefer to stick to therm

 

[NuclearN8]

NGK's are one of those recommended options you'll find in your owner's manual.

 

[Wuzzy]

No recommendation here, but I know they have to be iridium. Atleast thats what the tag on my motor says.

 

[sal6430]

I just replaced mine with the denso sk20r11. They are the long lasting iradium ones. I just figured they lasted this long I might as well put them back in. What ever brand you use, I found this was this easiest plug job I have ever done. Good luck

 

[boondoggle]

My thinking was along the line of Sal's. If they were good enough for 105k miles, they'll be good another for 105k more.

I did have a mix of NGK on one side and Denso on the other. From what I've read it was common for them to come from the factory that way. Not sure why.

All 6 are Denso sk20r11.

I got no MPG improvement but it was just a mainentance thing.

Take your time. Use a Torque wrench.

 

[MikeInNH]

NGK or Denso are fine. If the vehicle calls for Iridium...then stay with them.

 

[Mchabot001]

What ever brand you use, I found this was this easiest plug job I have ever done. Good luck

Now that's something I am glad to ear !!! Thanks

 

[oljedi11950]

Some folks have found when changing out plugs to have 3 on each side that is ngk & denso ! I went with denso , also some of the guys go with platinum & every 30k

 

[sal6430]

Just take your time and you will be golden. Good luck

 

[Dylan]

Just did mine today. I went with NGK Iridium IX. About $7 a plug.