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
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