What is the problem Pentstar Engine build date? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > JK Wrangler Technical Forum > What is the problem Pentstar Engine build date?

NEW JK WRANGLER GRAB BARS NOW at ROCKRIDGE4WDRear Disc Brake Conversion Kit- TJ,YJ,XJSWAG 50 Cal Ammo Can Mount With M2A1 Can

Reply
Unread 11-07-2012, 06:31 PM   #1
Panhead5
Registered User
2009 JK Wrangler 
 
Join Date: Sep 2011
Location: Columbus,Ohio, Ohio
Posts: 198
What is the problem Pentstar Engine build date?

This may be posted somewhere in here but it seems like I've read about a certain build date or serial number for the early 2012 Wrangler head problems .

If it exists what is the date or serial numbers affected before they got it squared away ??

Thanks in advance .

Panhead5 is offline   Reply With Quote
Unread 11-08-2012, 11:47 AM   #2
orygun9
Registered User
2012 JK Wrangler 
 
Join Date: Oct 2012
Location: Portland, Oregon
Posts: 2
Quote:
Originally Posted by Panhead5 View Post
This may be posted somewhere in here but it seems like I've read about a certain build date or serial number for the early 2012 Wrangler head problems .

If it exists what is the date or serial numbers affected before they got it squared away ??

Thanks in advance .
The following was originally posted by xtremzj:

Case Number: S1209000022
Release Date: 10/16/2012
Symptom/Vehicle Issue: Identifying Service Replacement Cylinder Heads
Diagnosis:
3.6L cylinders have been improved for durability by upgrading the valve seat and valve guide material. In order to verify that the latest upgrade is incorporated in to the cylinder head received from service parts verify the part number and Julian build date of the cylinder head
Part Number- RL141353AC or higher - left side head
Part Number -RL141352AD or higher– right side head
And a Julian build date of 2062 (206th of 2012) or higher .The build date is stamped on the outboard side of head at the center just below the rocker cover sealing rail
__________________
orygun9 is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.