Can't find info on these plugs anywhere. Has NGK changed the part #? Are these the v-groove? Thanks.

 

They are the V-groove and I am pretty sure that is the right number. I run them in my truck .....they seem to work very well.....I got them from Canadian Tire up here though so I'm not sure where you could get them.

 

I got NGK V-Power FR5-1 for my truck, they run great with no pinging / knock. I couldnt find them as well until the store Rep. looked on a part# cross reference sheet. The part # is F1000-5869, I couldnt tell you if this # is unique to this store but at least it gives you another lead. They only cost me 10.86 for the set.

1999 5.9 Quad Cab 4x4

 

be careful with the NGK plugs they have recalled some of them and i know of two people who have had the plugs just break apart and drop into the cylinder and blow the engine so be careful

 

I just found NGK's on rockauto.com , plus a huge selection of others.