[chizzle1]

Isn't the reason for using platinum plugs to extend plug life?
Do I have to go back with platinum?
The 06 Hemi in the Durango has copper plugs and ran fine.

Just thought it was odd that 1) my challenger came from the factory with platinum plugs and 2) they require changing at 35k miles.

 

[BAD GRANDPA]

First I've heard of platinum plugs, from the factory in our 5.7s. From what I've read, the 5.7s came with copper plugs, and the SRTs (6.1-6.2 & 6.4s) came with platinum.-:4-dontknow:

 

[chizzle1]

First I've heard of platinum plugs, from the factory in our 5.7s. From what I've read, the 5.7s came with copper plugs, and the SRTs (6.1-6.2 & 6.4s) came with platinum.-:4-dontknow:

^ Same here

I asked for a set of replacement plugs from the parts house and they quoted me almost $100 with tax. Upon further inquiry the guy working the computer told me that platinum plugs were listed as factory replacement.
Maybe he looked up an SRT instead of RT?

I was hoping to hear from a 2010-up R/T owner who has done a plug change.

If not I'll find out when I pull the first one.

 

[jkelly16]

^^^ Same as you two. Like you said, he may have looked up the wrong plug but the parts house is going to provide you with an alternate since the only place I'm aware you can get the OEM plug is from a dealer.

You may want to pull one just to see what you have just to be sure.

 

[chizzle1]

Wow.
The dealer wants $7 each for the factory replacement plugs. :wtf2:

He stated they are nickle plated, made by mopar (he wouldn't tell me the manufacturer) and the part number is splzfr5c11....

I asked him why the nickle plated plugs were more expensive than platinum, he simply stated: "That's what they cost."

 

[jkelly16]

I believe they are NGK. When I changed mine a couple of years ago the dealer was the only place you find the correct part number. Here's a thread that may help you.

Edit: Here's a link for plugs from one of our vendors, Mopar Online Parts.

http://moparonlineparts.com/oemparts.php?partstr=/splzfr5c11.html

and an additional 5% off.

http://www.challengerforumz.com/showthread.php?t=108320

 

[chizzle1]

Thanks, ended up going with Amazon as it was cheaper ($59 shipped).

Plugs should be here in about a week, in the mean time I'll pick up some anti sieze and die electric grease.

What is the torque value for the plugs?

 

[jkelly16]

Looks like 13 ft.lbs. or 156 in.lbs.

 

[chizzle1]

Looks like 13 ft.lbs. or 156 in.lbs.

thanks :smileup:

coincidentally, that's the same torque value for the intake bolts on my 01 Ram 5.9
Guess I will get some more use out of the inch / pound torque wrench.

 

[KingTuna]

The 5.7 in the Ram's had copper plugs up until 2013 I belive.. 2014 year model they started putting in platinums. I believe I read somewhere it was similar for the Challenger.

 

[hemithis]

i just bought them plugs yesterday 4-splzfr5c11 they where 80 bucks without tax ..

 

[cdahl383]

My 2010 takes copper plugs. I used the stock NGK replacements (labelled as Mopar but really NGK plugs). Platinum are for SRT's I believe. The copper plugs should be replaced every 30,000 miles per the manual.

 

[chizzle1]

My 2010 takes copper plugs. I used the stock NGK replacements (labelled as Mopar but really NGK plugs). Platinum are for SRT's I believe. The copper plugs should be replaced every 30,000 miles per the manual.

Did you give them the last 8 of the VIN when you checked?
The parts guy said that they needed it to look up the engine code, and what came in it from the factory. I didn't know the VIN numbering was that specific.

I'll take a pic when I pull the old plugs and when the new ones arrive.

 

[chizzle1]

i just bought them plugs yesterday 4-splzfr5c11 they where 80 bucks without tax ..

still have the reciept?
They are almost $30 cheaper on amazon.

 

[jkelly16]

Did you give them the last 8 of the VIN when you checked?
The parts guy said that they needed it to look up the engine code, and what came in it from the factory. I didn't know the VIN numbering was that specific.

I'll take a pic when I pull the old plugs and when the new ones arrive.

I don't think they want your vin number because of specifics, I think they want to track what you're putting on your vehicle. They've asked me that for everything I've ever purchased from the dealer. Like when I had to replace a rocker panel but they had no issue getting it without the vin number.

 

[DartByU]

Thanks, ended up going with Amazon as it was cheaper ($59 shipped).

Plugs should be here in about a week, in the mean time I'll pick up some anti sieze and die electric grease.

What is the torque value for the plugs?

I did this last weekend, bought the plugs from Steve White motors from Amazon. All the plugs I bought had a .041 gap and I changed it to .044 so make sure you have a spark gap tool, 1/4 and 3/8 swivel and pick up a GearWrench 6" 5/8 hex plug wrench too, it has a magnet to hold the plug and a built in extension, it works much better than the regular plug wrench with the rubber insert. Here are the tools I used.

 

[chizzle1]

I don't think they want your vin number because of specifics, I think they want to track what you're putting on your vehicle. They've asked me that for everything I've ever purchased from the dealer. Like when I had to replace a rocker panel but they had no issue getting it without the vin number.

I guess now they are replacing all the plugs with the platinum, I can't even order the copper ones anymore.
Doesn't make a difference in performance, just price and longevity.

I did this last weekend, bought the plugs from Steve White motors from Amazon. All the plugs I bought had a .041 gap and I changed it to .044 so make sure you have a spark gap tool, 1/4 and 3/8 swivel and pick up a GearWrench 6" 5/8 hex plug wrench too, it has a magnet to hold the plug and a built in extension, it works much better than the regular plug wrench with the rubber insert. Here are the tools I used.

Thanks. I found the tool you are referring to on Amazon for $15 with free prime 3 day shipping.

 

[DartByU]

Thanks. I found the tool you are referring to on Amazon for $15 with free prime 3 day shipping.

I bought mine even cheaper at the local Advance Auto...
http://shop.advanceautoparts.com/p/gear-wrench-5-8-x-6-magnetic-swivel-spark-plug-socket-80546/25984192-P?searchTerm=gearwrench

 

[hemithis]

yeah i still have the reciept.. i had plans to change them on my day off tue but i got caught up in doing house stuff and only did my 180 tstat.. thats why i didnt go the online route i wanted them the same day. but it didnt fall into place doing everything in one day like i hoped

 

[cdahl383]

I just got my copper ones from the dealership about a month or two ago. The original ones I pulled out at 30,000 miles were the same ones too, NGK (# same as hemithis posted above, don't have it with me right now).

Seems odd they would just stop making those plugs? Maybe the dealership is switching to a different one but I would imagine NGK still makes that same exact plug still if you wanted to stick with it.

A magnetic socket is a must doing plugs on these cars, makes it so easy. They sit WAY down in that hole. Wouldn't want to drop a new one in there and have a piece come off and drop into the cylinder, that would suck.