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12-23-2012, 12:44 AM
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#16
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Intrepid Fan |
Join Date: Apr 2007 |
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| Quote: |
Originally Posted by el_charal
Despite the negative things I read on here about aftermarket plugs, I FINALLY decided to give it a shot. I DO NOT REGRET IT.  My Trep has almost 95k miles now and based on how worn they were, I wouldn't doubt that it never had the spark plugs replaced. My car picks up a lot better now than with the Champion plugs and is a lot more responsive in all situations. The car has a smoooooth idling at red lights and it's so quiet that it sounds like it's turned off but when I accelerate it sounds awesome and it REALLY does accelerate better. Nothing extreme but I CAN REALLY FEEL THE DIFFERENCE. Oh and I replaced all the ignition coil boots with Denso boots which I'm sure helped too. Anywho, I RECOMMEND 'EM.  |
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What's the part number of these iridium plugs? I work at the Autozone and their system says no iridium plugs will fit in the 3.5s.
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12-23-2012, 12:48 AM
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#17
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Intrepid Modder |
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Join Date: Aug 2012 |
Location:
Lancaster / Palmdale |
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Year: 2004 |
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Color: Silver |
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Originally Posted by flipfloptrep
What's the part number of these iridium plugs? I work at the Autozone and their system says no iridium plugs will fit in the 3.5s.
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What's the make, model, and year of your car? And trim (ES, SXT, R/T)
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12-23-2012, 10:51 AM
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#18
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Intrepid Pro |
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Join Date: Feb 2002 |
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| Quote: |
Originally Posted by el_charal
What's the make, model, and year of your car? And trim (ES, SXT, R/T)
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See his siggy. 
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12-23-2012, 12:46 PM
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#19
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Intrepid Modder |
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Join Date: Aug 2012 |
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I think AutoZone might be right.. I checked eBay then Denso & NGK (only brands I trust for iridium plugs). I also checked Bosch, AC Delco, and Champion so I think you're out of luck for the iridium plugs. If you want NGK, the best plug you can get for your 2002 ES is a Laser Platinum plug - part #7781 The only manufacture I didn't check is AutoLite but according to folk here those brand plugs will get devoured by our engine & possibly cause damage.
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12-23-2012, 04:55 PM
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#20
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Intrepid Pro |
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Join Date: Feb 2002 |
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12-23-2012, 05:12 PM
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#21
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Canuckistanian Resident |
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Join Date: Apr 2008 |
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Saskatchewan Canada |
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http://www.sparkplugs.com/product.aspx?zpid=3630
Narrowed it down for iridium for a 2000 Chrysler 300M with a 3.5 (my engine)
Reviews for these plugs include improvements in response and mileage. I am going to see how hard it is to get them here. I have maybe 5000kms on my current plugs (NGK Laser series), so pending catastrophic engine / electrical issues they shouldn't be to far gone yet.
If I can get these plugs I will be sure to do a comparison and be sure to get some video footage of 0-60 times, and some highway pulls to see if there is a difference.
Edit:
Added them to the cart and did a shipping estimate, and because I am located in Canada, after shipping I will be looking at $107.95 for the 6 plugs. Going to be looking into a local supplier if possible. If they work as good as the claims / reviews, I will buy them and get them for the truck too
Last edited by DjGreggieP; 12-23-2012 at 05:18 PM..
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12-23-2012, 05:34 PM
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#22
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Intrepid Fan |
Join Date: Apr 2007 |
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Posts:
213 |
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| Quote: |
Originally Posted by el_charal
I think AutoZone might be right.. I checked eBay then Denso & NGK (only brands I trust for iridium plugs). I also checked Bosch, AC Delco, and Champion so I think you're out of luck for the iridium plugs. If you want NGK, the best plug you can get for your 2002 ES is a Laser Platinum plug - part #7781 The only manufacture I didn't check is AutoLite but according to folk here those brand plugs will get devoured by our engine & possibly cause damage.
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Those are the plugs I been using. Heard good reviews about iridium plugs but no company makes them for the 3.5 Chryslers.
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12-23-2012, 06:06 PM
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#23
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Intrepid Modder |
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Join Date: Aug 2012 |
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| Quote: |
Originally Posted by flipfloptrep
Those are the plugs I been using. Heard good reviews about iridium plugs but no company makes them for the 3.5 Chryslers.
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According to sparkplugs.com Autolite (be careful) and Pulstar make iridium plugs for the 2002 ES 3.5
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12-23-2012, 06:16 PM
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#24
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Intrepid Fan |
Join Date: Apr 2007 |
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Autolites are made by Ford. Its a generic Motorcraft plug. I love my trep too much to put a Ford product in it. Pulstars......I might just use them when I do a tune up next time.
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12-23-2012, 06:52 PM
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#25
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Intrepid Pro |
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NGK Iridium uses the same electrode design as the NGK Platinum. It's a suitable extra long life plug for the 3.x engines. It would not surprise me in the least if they are good for 120-150k.
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12-28-2012, 04:31 PM
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#26
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Mag-Tard! |
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Join Date: Mar 2005 |
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Year: 2002 |
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Maybe this link will help for an iridium plug for the 3.5?
The standard NGK plug for the Special is a ZFR5LP-13G
This link shows a cross reference to a Denso Iridium plug that retails for $9.99
http://www.densoproducts.com/SearchR...&kw=ZFR5LP-13G
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12-28-2012, 07:27 PM
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#27
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Intrepid Fan |
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Ronbo if u actually go thru the Denso site and plug in your car's info, which for me is 2000 R/T with the 3.5....it only shows one plug available and its a nickel plug...u think the plug u linked to will actually work ok with the 3.5 engine? Why the hell wouldn't it show the plug u link available for the 3.5 R/T's engine since its the same damn engine in the 300m....hmmm....strange if u ask me....
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12-28-2012, 09:56 PM
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#28
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Mag-Tard! |
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Join Date: Mar 2005 |
Location:
Tiny Pebble, AR |
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Year: 2002 |
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I cross referenced the NGK plug that comes standard in the Special on the Denso site and it showed the Denso IRIDIUM POWER : IK16 as an Iridium substitute for the NGK ZFR5LP-13G. Plenty of people have used the same NGK plugs in 3.5L engines besides the Special. I don't see any reason the Denso IK-16 would work in all 3.5L LH cars(3.2L also). And they retail for $9.99 which is less than the Pulstars @ $12.99 ea.
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01-07-2013, 08:23 AM
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#29
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Intrepid Newbie |
Join Date: May 2004 |
Location:
Quebec, Canada |
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Year: 2002 |
Model: ES |
Color: Almond Pearl Metal. |
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46 |
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Hey guys,
Don't know about the US, but here in canada I can get NGK Iridiums for my 2002 ES 3.5
Here is the part number: ZFR5LP-13G.
They retail 11.09$ a piece.
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I switched to NGK Iridium Spark Plugs :-D
