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Blown head gasket 94 6cyl

747 views 5 replies 5 participants last post by  vmxwinn 
#1 ·
Hello I’m new to the forum,

I bought a YJ a few months ago. I impatiently drove it on its old radiator which lasted 200 miles before it gave up and I over heated. Replaced the entire cooling system but have a blown head gasket. I’m assuming I also cracked the head and the cost of inspecting it is about the same as a replacement so I just planned on replacing. I saw the code 401mx25 on the side denoting a January 25 1994 build date but I’m getting conflicting info on what I need to order a new head. Some places say I need the casting number from the block stating there are 3 variants of the 4.0 and others say there’s just 1 replacement. Looking for help
 
#4 ·
Welcome to the forum Nickgsxr749,

Good Luck, L.M.
 
#5 ·
I did a quick google search... hopefully this helps.
 

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#6 ·
See Gottagofasts post above you want the casting # 7120.
 
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