Does my 2013 JK have an AB or AC head? - Page 3 - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 12-01-2012, 08:51 AM   #61
Jeeper
 
Join Date: May 2012
Posts: 195
Quote:
Originally Posted by simadownow6988 View Post
My 2012 Rubi was built on June 30, 2012. The head date is 1692A. Do you guys think I have the defective head or a AB head?
Who said all AA heads are defective???

davefr is offline   Quote Quick Reply
Old 12-01-2012, 10:20 AM   #62
Jeeper
 
Join Date: Jan 2010
Location: Las Cruces, NM
Posts: 2,291
Made it by 6......

__________________
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
Garyk is offline   Quote Quick Reply
Old 12-04-2012, 01:29 PM   #63
Newb
 
Join Date: Dec 2012
Posts: 1
2012 JK- built in June 12, so I think I'm close to line of either AA or AB. Stamp on driver's head 1562B, what do you guys think? I have 4700 miles, and noise seems like normal valvetrain noise. I think a lot people are over sensitive to any sort of tick. My mom's DOHC engine in Lexus is certainly not quiet
MattJK12 is offline   Quote Quick Reply
Old 12-04-2012, 03:36 PM   #64
Jeeper
 
Join Date: Jul 2009
Posts: 231
Quote:
Originally Posted by davefr View Post
Who said all AA heads are defective???
I dont guess anyone, but it seems like they are pretty problematic and Chryslers TSB points to a potential problem with them. Nobody really knows.
simadownow6988 is offline   Quote Quick Reply
Old 12-04-2012, 05:18 PM   #65
Jeeper
 
Join Date: Dec 2012
Posts: 16
1622A head stamp with a build date of june 14 2012

Ive only got 500 miles.

Is this AB or AA?
JeffMan is offline   Quote Quick Reply
Old 12-04-2012, 05:50 PM   #66
Jeeper
 
Blastek's Avatar
 
Join Date: Mar 2012
Location: Portland, OR
Posts: 2,161
Quote:
Originally Posted by JeffMan View Post
1622A head stamp with a build date of june 14 2012

Ive only got 500 miles.

Is this AB or AA?
no one could tell you but chrysler, unfortunately. Allpar said that the AB head was in production sometime between late june-early july. The only number considered "safe" right now is 206 and above. even with AA heads, you may never have a problem..
__________________
2012 Deep Cherry Red JKU Sport S - Tickastar, 6 speed, 3.73, Dual Tops
Blastek is offline   Quote Quick Reply
Old 12-04-2012, 06:30 PM   #67
Jeeper
 
CampThree1982's Avatar
 
Join Date: Nov 2012
Location: North Carolina
Posts: 291
Mine is a November 2012 build so who knows what I'll get. I'll check when it arrives I guess, not much else to do but wait.
__________________
MSgt USMC (Ret)
1981-2004

2013 Rubicon 2 dr, Commando Green
2002 Harley Davidson FXST Softail, Vivid Black
2007 Harley Davidson FLHX Street Glide, Midnight Pearl
CampThree1982 is offline   Quote Quick Reply
Old 12-04-2012, 07:02 PM   #68
Jeeper
 
Blastek's Avatar
 
Join Date: Mar 2012
Location: Portland, OR
Posts: 2,161
Quote:
Originally Posted by CampThree1982 View Post
Mine is a November 2012 build so who knows what I'll get. I'll check when it arrives I guess, not much else to do but wait.
Yours will be a 2013 with the latest AC head.
__________________
2012 Deep Cherry Red JKU Sport S - Tickastar, 6 speed, 3.73, Dual Tops
Blastek is offline   Quote Quick Reply
Old 12-04-2012, 08:55 PM   #69
Jeeper
 
Join Date: Jul 2009
Posts: 231
I wish we could somehow get the run dates of the AB heads.
simadownow6988 is offline   Quote Quick Reply
Old 01-01-2013, 04:52 PM   #70
Jeeper
 
smitty141's Avatar
 
Join Date: Sep 2012
Location: Hooterville Mo
Posts: 207
Just checked my 2013... 2032..

This just sucks, I have 6500 miles on it. If or when mine ticks I will kick it to the curb. I have never had any luck with a stealership. They can't even put the right oil in my Wrangler....

I think I have a 12 pack of Stag out in the garage... time to get busy drinking...

Hey Chrysler u suck $hit thru a dirty straw...

__________________
Smitty from Hooterville
2013 Wrangler Sport True Blue 2 Dr., 3.73"s Auto,
AEV 2.5 Dualsport lift. bilstein shocks, AEV Geo. Brackets. GY Dura Trac 315-70-17 on Strike 5 wheels

2012 KTM 990 Adventure
smitty141 is offline   Quote Quick Reply
Old 01-01-2013, 05:47 PM   #71
Jeeper
 
Join Date: Dec 2012
Posts: 36
Quote:
Originally Posted by smitty141 View Post
Just checked my 2013... 2032..

This just sucks, I have 6500 miles on it. If or when mine ticks I will kick it to the curb. I have never had any luck with a stealership. They can't even put the right oil in my Wrangler....

I think I have a 12 pack of Stag out in the garage... time to get busy drinking...

Hey Chrysler u suck $hit thru a dirty straw...

Relax u have an AB head and as far as I know none have started ticking!! I'm in the same boat mine is 1982a and a 2013.
__________________
2013 CRUSH Jeep Wrangler, 6 speed manual
Z28Bryan is offline   Quote Quick Reply
Old 01-01-2013, 06:10 PM   #72
Jeeper
 
smitty141's Avatar
 
Join Date: Sep 2012
Location: Hooterville Mo
Posts: 207
Quote:
Originally Posted by Z28Bryan View Post
Relax u have an AB head and as far as I know none have started ticking!! I'm in the same boat mine is 1982a and a 2013.
So I don't have to drink the Stag beer?? I already have 5 of them down...



At what mile were the problems showing up? It is just a bit disappointing spending so much and thinking a problem it lurking out there.
__________________
Smitty from Hooterville
2013 Wrangler Sport True Blue 2 Dr., 3.73"s Auto,
AEV 2.5 Dualsport lift. bilstein shocks, AEV Geo. Brackets. GY Dura Trac 315-70-17 on Strike 5 wheels

2012 KTM 990 Adventure
smitty141 is offline   Quote Quick Reply
Old 01-03-2013, 08:40 PM   #73
Jeeper
 
smitty141's Avatar
 
Join Date: Sep 2012
Location: Hooterville Mo
Posts: 207
Does this only effect the left head?? Or do both have a problem??
__________________
Smitty from Hooterville
2013 Wrangler Sport True Blue 2 Dr., 3.73"s Auto,
AEV 2.5 Dualsport lift. bilstein shocks, AEV Geo. Brackets. GY Dura Trac 315-70-17 on Strike 5 wheels

2012 KTM 990 Adventure
smitty141 is offline   Quote Quick Reply
Old 01-03-2013, 10:03 PM   #74
Jeeper
 
Blastek's Avatar
 
Join Date: Mar 2012
Location: Portland, OR
Posts: 2,161
Quote:
Originally Posted by smitty141 View Post
Does this only effect the left head?? Or do both have a problem??
still no reported misfire problems with the AB heads. i would say only a couple of people have had problems with both heads out of the hundreds of reported cases on the internet.

head problems occur from <1000 miles to 30k miles. some tick, some don't but throw a CEL out of nowhere.

No one with a '13 has a confirmed head problem on this board to my knowledge. Mine has done 5k miles since the head replacement and it sounds like a brand new motor.
__________________
2012 Deep Cherry Red JKU Sport S - Tickastar, 6 speed, 3.73, Dual Tops
Blastek is offline   Quote Quick Reply
Old 01-03-2013, 10:38 PM   #75
Jeeper
 
CampThree1982's Avatar
 
Join Date: Nov 2012
Location: North Carolina
Posts: 291
Quote:
Originally Posted by Blastek View Post
Yours will be a 2013 with the latest AC head.
This is what is says:

3252A
08610
013000
__________________
MSgt USMC (Ret)
1981-2004

2013 Rubicon 2 dr, Commando Green
2002 Harley Davidson FXST Softail, Vivid Black
2007 Harley Davidson FLHX Street Glide, Midnight Pearl
CampThree1982 is offline   Quote Quick Reply
Old 01-03-2013, 11:03 PM   #76
Jeeper
 
Join Date: Dec 2012
Location: O'Fallon, MO
Posts: 28
Just in case there is any confusion, the Pentastar engine is built in Michigan & Saltillo (Mexico). Jeeps are built in Toledo. So, it's not like they built your engine specifically for a 2013 using 2012 parts. It's a large production chain so the lag times will inevitably lead to some of them winding up with previous year's engines.

CampThree, looks like you have an AC Head.
__________________
"I'm too drunk to taste this chicken." -Col. Sanders

"Bring me men..."
Snazzmeister is offline   Quote Quick Reply
Old 01-05-2013, 01:56 AM   #77
Jeeper
 
Join Date: Oct 2012
Location: Slidell
Posts: 16
hello all I been wondering about this head issue for a while just stumbled across threads tonight. I have a 2012 jku. the Build Date is jul-12 the MDH is 071306.

so with that information i assume it was built on july 13th at 0600hrs. which would put it close to the 2013 build dates. correct me if im wrong. Now tonight I found this thread and looked at my head numbers on the drivers side as suggested by Blastek. Those numbers look like this

1882A
00960
001000

now with that knowlege if im reading the posts right i do not have and AC head, but is the 1882A close enough to the 206 mark to say i have the AB head and not the AA???

I have waited for years to become a wrangler owner and love this jeep thing. have had it for less than 6 months and already adding things. I really dont want my dream to turn into a bad dream. lol
Orion_2280 is offline   Quote Quick Reply
Old 01-05-2013, 12:14 PM   #78
Member
 
Join Date: Apr 2011
Location: Atlanta now...NC born/raised
Posts: 289
Quote:
Originally Posted by Blastek View Post
all parts end with two letters. Usually AA because most parts don't get revised. The AB sticker that you can see on the passenger side head is the part number for the plastic valve cover. This isn't related to the part number for the cylinder head, which is not visible on the passenger side because the exhaust blocks it.

Nothing to fear.
He's Right about the Letters. The Letters can and will change like , AB to AC to AD etc...it doesn't change the fact Of Fitment, it just means a minor change has been made, Improvements etc. if Mopar p/n's have been Supersceeded by higher letters then only way to get the lower letters is to find someone with old stock, which if the seller is a good business owner, he should sell that older part at a discount, but not always, they are greddy as H*LL....lol....
sircody is offline   Quote Quick Reply
Old 01-05-2013, 01:24 PM   #79
rotaredoM

WF Supporting Member
::WF Moderator::
 
panthermark's Avatar
 
Join Date: Aug 2011
Location: Chicago-land
Posts: 9,574
Images: 13
Quote:
Originally Posted by CampThree1982 View Post
Mine is a November 2012 build so who knows what I'll get. I'll check when it arrives I guess, not much else to do but wait.
Yeah....I have not checked mine either. But I'm assuming I'm OK. I didn't order mine until early October....so it should be safe......for now......hopefully.
__________________
2013 Sahara Unlimited
Billet - Auto - 3.73 - Connectivity - Painted Hardtop - LSD - Remote Start - Saddle Leather - Side Airbags

I may mall crawl...but I look good doing it.....
panthermark is offline   Quote Quick Reply
Old 01-19-2013, 12:28 PM   #80
Jeeper
 
Ezekiel97's Avatar
 
Join Date: Feb 2012
Location: Daphne, AL
Posts: 93
1622B
02620
001000

I have a small feeling I have the bad head
June 12 Build date
Ezekiel97 is offline   Quote Quick Reply
Old 01-19-2013, 01:52 PM   #81
Newb
 
AgateSahara's Avatar
 
Join Date: Dec 2012
Posts: 11
Man, I love this forum. As a new Jeep owner you all are great at helping out with information. Hope as I get some experience I can repay the group. I guess I can stop thinking I am hearing something in my engine .
AgateSahara is offline   Quote Quick Reply
Old 02-03-2013, 05:47 PM   #82
Newb
 
Hal9000's Avatar
 
Join Date: May 2012
Posts: 8
Hmmmm..... Looks like I am in for trouble.
0852A
07800
001000
No problems yet but I really have not pushed the Rubi to hard. 5800 mi
Forgot Manufacture date April 12
Hal9000 is offline   Quote Quick Reply
Old 02-03-2013, 10:40 PM   #83
offroadvegan

WF Supporting Member
 
scottmphoto's Avatar
 
Join Date: Mar 2011
Location: Rhododendron, OR
Posts: 833
Quote:
Originally Posted by 109 Rider View Post
I have 2013 JKUR.
Manufacturer date of the vehicle is August 2013.
I have head number 2242B.
Can someone tell me is this the newest head ?
Thanks.
Wow...your Jeep was built in the FUTURE!!??? Crazy.
__________________
Check out my blog - Offroadvegan!

2013 Wrangler Rubicon Unlimited Billet "Frank the Tank"

“The Jeep is America’s only real sports car.” - E. Ferrari
scottmphoto is offline   Quote Quick Reply
Old 02-12-2013, 09:48 PM   #84
Newb
 
sandfrog1's Avatar
 
Join Date: Feb 2013
Posts: 4
Images: 2
Mine says 0362B... AA or AB??
sandfrog1 is offline   Quote Quick Reply
Old 05-06-2013, 07:47 AM   #85
Jeeper
 
Lusus_Naturae's Avatar
 
Join Date: Oct 2012
Location: OKC, missing WI
Posts: 2,027
I don't think anyone has dates for the AA to AB change, just when the AC started. The closer you are to the AC date the better your chance for a AB head. I would think they would have run the AB heads for a few weeks minimum but only the engineers know for sure right now.
__________________
2013 JKU Sport, billet, auto, 3.73, LSD, 315/75/16 Duratracs on MB 72, 10A springs, Bushwacker flatties

Sold - 2005 TJ, red, auto, 3.73, 33" Duratracs, 4" lift
Ice storm casualty in 2007 - 2003 TJ, green, auto, 3.73, 33" Duratracs, 4" lift
Lusus_Naturae is offline   Quote Quick Reply
Old 05-06-2013, 08:06 AM   #86
Jeeper
 
live_slow's Avatar
 
Join Date: Apr 2013
Posts: 666
Tag -


And has anyone determined a way to figure out, by code, what plant your engine came from?

Or is that actually listed elsewhere?
__________________
IIIIII

Just another Billet Silver Metallic. It blends.
2013 | JK | 23R | 2"M | 33s on 15s |
live_slow is offline   Quote Quick Reply
Old 05-09-2013, 08:08 PM   #87
Jeeper
 
Join Date: Apr 2013
Location: Central Ca
Posts: 441
Just checked my head and it is different in that my number with the end letter is in the middle of the plate.

?
0593A
013000

Manufacturer date on door says March 13'
lando76 is offline   Quote Quick Reply
Old 05-19-2013, 11:55 AM   #88
Jeeper
 
Join Date: Sep 2012
Location: Spotsylvania, VA
Posts: 137
Just stumbled on this myself.

My numbers are:
013000
15910
2282A

I was born on Aug. 12 Am I good or bad??
nmdesertrat is offline   Quote Quick Reply
Old 05-19-2013, 01:11 PM   #89
Jeeper
 
jadmt's Avatar
 
Join Date: Sep 2012
Location: missoula
Posts: 5,750
Quote:
Originally Posted by nmdesertrat View Post
Just stumbled on this myself.

My numbers are:
013000
15910
2282A

I was born on Aug. 12 Am I good or bad??
good
jadmt is offline   Quote Quick Reply
Old 05-19-2013, 02:46 PM   #90
Jeeper
 
Join Date: Dec 2012
Location: Moon Base Alfa
Posts: 39
So the first set of numbers, 2552B, stamped on my drivers side head would indicate a Sept, 11 2012 build date for that head? I guess its safe to assume I have the updated AC head.

Jeep1st is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid
» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 02:36 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC