Hi guys,
I have a 2008 Dodge Durango with a 5.7L Hemi engine. It has 30,000 miles on it and I need to replace the plugs. They all seem easy to access EXCEPT for the 2 by the power brake booster. I heard you have to remove the power brake booster to replace the 2 plugs on the driver side rear of the engine. Is this true? Dodge wants $200+ to replace them and I can't pay that every 30,000 miles. Has anybody replaced plugs on the 2008 Durango with the Hemi? If so, how do you go about removing the power brake booster? Do you have to unhook brake lines etc? Thanks for the help.

 

I do not think you have to remove the booster....but I could be wrong. It is hard to reach the last set of plugs and you will need 16 plgs. Stick with Champion copper (OEM) or Iridium,
FF

 

HH:

If you search here or the many other forums for Durangos, folks are reporting 2-3 hours to make the change.

I have not heard of removing the booster, but having a good assortment of short ratchets along with several lengths of extensions is very helpful.

As FF said, the recommended plug is the OEM Champion RE14MCC4 gapped at .045. Some have used a platinum equivalent and reported good results. Others did not and went back to OEM.

FWIW, you don't have to replace them at exactly 30k. Unless you had an oil burning issue or something along those lines where the plugs got fouled, another 5-10k will not hurt anything.

Vehicles that idle a lot such as police/fire/taxi do eat their plugs up more quickly since the plugs are wearing even when the vehicle sits and runs.

A bit of trivia:
If you wish to know how many hours are on your engine, press the trip odometer button and hold with the key on but engine off.

After 20 seconds or so, the odo display should read 0000hrs.

My 2004 does this.

Don

 

Thanks for the help guys. I'm pretty sure you don't have to remove the brake booster now. It was the manager of the service shop at a Dodge dealership who told me that. I took the coil pack by the brake booster off this morning and was able to get a socket in each plug hole. I had to go buy an assortment of extensions and swivels, along with the plugs. But my total was WAY less than the $200+ they would have charged me to do it. I've spent several hours on it and only have 2 more plugs to go, but it's getting easier each time!

 

Has anyone ran the Iridium Plugs? I run them in all of our MX race bikes with great results Yamaha & KTM (namely the little KTM50's - the older model 01' to 08', 50cc would occasionaly burn up a stator or have a coil go, I never have since running the NGK Iridium plugs)
A Dodge Durango is a far different beast but was just wondering if anyone has seen or noticed any benifit to these plugs?

 

The best way i found,was raise the truck and the front wheels and go thru the wheel wells. Takes me about an hour to do all 16 plugs.

 

I have Champion iridiums in my Durango without any problems,
FF

 

I have a '04 HEMI Durango with 137k on it running the original factory installed plugs. Car runs flawlessly. Took it over from my dad who worked for Chrysler. I think I will finally change the plugs. Truck has run perfect the entire time. Plenty of power pulling farm equipment occasionally and plenty of 7500 lb boats. Do you recommend changing the coils or wires at the same time???

 

I would clean the throttle body, change the EGR valve, change the plugs and wires,
FF

 

I have replaced it yesterday. Last 4 plugs on both bansk are little difficult. what i use is 2" 3/8" extension & 3/8" to 1/2" adapter & ratechet of 1/2". The standard 5/8" spark plug socket was used