I got my dad to bring my truck in for the tie rod end recall and at the same time I told him to get them to change my plugs as I got around 80000kms on the truck and do lots of towing, and personally I think it's probably a good thing. They said they usually don't do that or at least don't usually enforce it. Plus they said they are not really in position to do it, sounds like they've never done it. My question is it really worth it, engine runs smooth and all but I like preventive maintenance especially since I'll probably have the truck till it dies.

 

Not in a position to do it? Maybe they meant that they didn't have time that day.

I replaced mine around 34,000 miles and they looked fine. Manual says every 30K miles so I'll stick to that just to keep to the lifetime warranty.

Costs about $60 if you do it yourself, dealer wanted something like $250 if I recall. There are a couple plugs that are a pain to get to.

If nothing else, I'd at least pull a few and check them out.

 

i have allmost 50,000 on mine. Same plugs. 20mpg highway. Runs great. Unless they can prove a bad spark plug detonated your engine I wouldn;t bother. Unless of course it is running poorly. As mentioned just pull one out and see how it is. My dealer wanted $316.00 to do mine. No thanks. Maybe after I pay off the Christmas bills. Cause I am poor right about now!

 

Once I Hit 30k I'm going to pull a few and see how they look... If they look bad I'll change them.

 

I changed mine so there wouldn't be any questions if a warranty issue came up. I don't think they needed it but wouldn't leave them for 80,000 km. I did it myself and saved a few bucks.

 

I`m guessing these are all 4th gen hemi`s your talkin about....
What plugs and part number to the plugs are you all running....
Who had the best deal on spark plugs when you bought them...

 

I'm running the factory part number NGKs
LZFR5C–11 (Gap 0.043 in [1.09 mm])

When I bought mine a year or so ago the only place you could get them was from the dealer. Now it looks like Jegs sells them too $3.69 x 16 plugs

 

I changed mine in my 3rd Gen at 30k but they looked fine. I'm going to do them again at 60k, but I'd bet they'll look fine then too but since I only put about 7-8,000 miles a year on the truck it's like a once every four year thing.
Realistically, I think 50,000 miles is about the limit on what you should put a copper plug through and wouldn't push one any farther than that.

Obviously if you change them yourself it won't cost you that kinda jack, I wanna say I paid just a tad over $2 a plug when I changed them. Granted it took me longer to change the plugs in the Hemi than any vehicle I've ever changed plugs in before, but that's cause there are 16 of them, the coils packs sitting on top takes a little more time to remove/install than a standard wire plug and the back two were a little bit of a PIA to get at (but a small piece of cut garden hose took care of it). Took me a little over two and a half hours...

 

Nice thanks for all the replies. For them that changed them on your own did you need a special tool to get to some, or a normal ratchet set will do the job? I think I'll buy the plugs and change em myself when I get time off.

 

https://dodgeforum.com/forum/4th-gen...ug-change.html

I did them myself at 30k miles and just like the rest, they looked fine. Got the plugs at the dealer for about $70 out the door. 2 hours and a sore belly from lying on top of the motor to get to the back plugs. This DIY is very good but I used the wobbly extensions and did not need all of the tools in the link. One dealer wanted $315 and the other $350. It felt good to know how to do it myself as I had heard how tough it was. It's not difficult, just time consuming.