I know, I know it's been asked a 1,000 times ! but I have searched and searched now for 30 mins on this site and I am lost ! Champion,Autolite, NGK ?

98 3.9l V6 Auto

OK NGK V-Power is what I am going with. What part number and gap would you guys suggest ? I will be doing wires,cap and rotor as well. I figured I would go to Summit for cap and rotor and Napa for the Premium wire set.

Thanks in advance !

 

another subject beat to the ground. i run the ngk v-power oem heat range. the guys at my local napa are burnt out and cant figure out the cold range plug for my truck. it took about an hour last time looking for the plugs and still nothing. so whatever. i have the napa cap and rotor on my distributor. brass contacts. all you need unless youre doing ignition system mods like user and r/t on this site. and the napa premium wires are awesome for the stock system.

 

What is the oem heat range ?

 

cant tell you off hand. but all i can say is its oem direct replacement. someone who knows more about this than i do should chim in. im a diesel tech. i hate this spark plug sh*t.

 

I think it's these:
FR5-1

They are gapped correctly too.

You can search here if needed too for other vehicles and so on.

http://www.ngksparkplugs.com/part_fi...t.asp?mode=nml

Also, I think the lower heat range is FR4-1 I bought a set of the lower heat ones once for the v6. (they didn't have the fr5's)