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Unread 09-15-2009, 08:24 PM   #1
cubsin2079
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Champion truck plugs DISCONTINUED????

Its tune up time for both the TJ AND XJ. So I went to the local Napa and asked for Champion 4412. The guy says we dont have any. OK I will go to Orielly right next door. Guy says we cant order them. Discontiued item. I also checked Advance auto and the dreaded Auto Zone. The guy at Advace said there is no replacement part #. I have used these plugs since day one. Any suggestions for a new plug?? I do know to stay copper core - no platinum going in my Jeeps.

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Unread 09-15-2009, 08:28 PM   #2
Holder350
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Unread 09-15-2009, 08:31 PM   #3
wickerham
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yea found this out last night myself online at champion site.
good ol' copper cores for me i guess
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Unread 09-15-2009, 08:48 PM   #4
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Champion 4412, Truck Plug 6Pk | CHAMPION | Manufacturers 1 | DieselGalaxy.com


get em while you can

the shipping $$$$

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Unread 09-15-2009, 09:09 PM   #5
BrunoS
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well, truth be told... i never noticed a difference. perhaps they will be rebranded.

just look for a truck plug in autolite 3924 equivalent , ask for what they have for that, that shows up in a champion truck plug.

why? 'cause the autolite 3924 is the original design style plug for the 4.2 and 4.0 motor...old school...before they spec'd the autolite 895 "hotter" tip style plug. problem is the 4412 champs, and RN12YC plugs and similiar are too hot a plug for a well tuned 4.0, and you get a hot idle "miss" that the 4.0 motors are famous for...caused by the incorrect plug being listed on the tables for the motors.

as for that, the older champ RN14YC plugs were spec and solved that problem (they are "colder"), so those and autolite 3924 are the same. go check them out at the shop counter!
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Unread 09-16-2009, 08:52 AM   #6
SkinnyMe97
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just ask for plug type "RC12LYC" in whatever brand you prefer (thats the OE plug recomenendation) should be listed on a sticker somewhere under your hood along with stock gap setting .
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Unread 09-16-2009, 12:22 PM   #7
ehall
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I switched to the Autolite 3924 and have been very happy with them
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Unread 09-26-2009, 02:29 PM   #8
XJ99
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So is everyone happy with the Autolite 3924 plugs?
I heard the Champion 438 plugs are OEM. I was thinking
of going with them until I saw this thread...
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Unread 09-26-2009, 02:58 PM   #9
tclaremont
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I just installed the autolite 3924 plugs this afternoon, and there was a HUGE difference in the idle quality. Of course, I probably could have put ANY plug in there and it would be an improvement over the old worn out ones. It runs pretty darn smooth for 200,000 miles.
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Unread 09-28-2009, 03:36 PM   #10
XJ99
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Napa ordered some 4412 plugs on Saturday,
and they came in today. Once they are gone,
that's it!
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Unread 09-28-2009, 03:40 PM   #11
justanotherjpr
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Installed some Autolite 3924's when I bought my Jeep and pulled them out 2 years and 20,000 miles later and they still looked brand new. I went ahead and replaced them since I already had new ones and they were $1 each. I will continue to run the Autolites.
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Unread 09-28-2009, 04:59 PM   #12
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I have autolites and no issue.
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Unread 10-02-2009, 06:39 PM   #13
mortalenema
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I just came from my local NAPA and was also told the Champion Truck Plugs were being superseded by a platinum plug. I got the last box of 4412s they had.

I just sent an email to Federal Mogul asking what the real story is. We shall see.
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Unread 10-12-2009, 12:22 PM   #14
colt933
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Quote:
Originally Posted by BrunoS View Post
as for that, the older champ RN14YC plugs were spec and solved that problem (they are "colder"), so those and autolite 3924 are the same. go check them out at the shop counter!
The RN14YC plugs that I bought in response to this thread - to smooth out my rough hot idle - do not fit my '01 XJ. They require the large size socket and I cannot physically install them in the XJ as the large size socket will not slip down inside the recess in the motor.

Is this particular to the late model XJs?
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Unread 10-12-2009, 12:48 PM   #15
XJNUTTIER
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Mopar still makes them for the 4 liter.. That's what i use... They are made by champion, if I am not mistaken...
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