How to identify 0331 or TUPY head
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Hi everyone, I've searched for this and haven't really found any good answer. I have an '01 tj with the 4.0 engine. I would like to find out how to identify what head my engine has on it. I've read that the heads labeled 0331 are prone to cracking and that they were changed to a head labeled
05 LJ 4.0 Head Jeep Wrangler Forum
the 0331 head thread (help out if you have one!) - Page 5 - Jeep
No numbers stamped on my head. (TUPY, 0331) 2001 TJ
Clearwater Cylinder Head Clarification Needed (0331) Head Swap In
the 0331 head thread (help out if you have one!) - Page 5 - Jeep
Finally gonna get a head for my 99 4.0L - Jeep Cherokee Forum
Is my 0331 cracked? Pics Inside. - NAXJA Forums -::- North
Cracked head - can I use a 97 on a 2000?
Is this the cylinder head that cracks?
