What is this part called?

[quote:e3149b3828="randyburleson"]'93 XJS 4.0L 6CYL.
I have had problems with losing water.
I believe I have a bad head gasket or cracked head.
Anyway.. that leads me to my problem. I have been refilling the water on a daily basis and lost all of my antifreeze. So, when it got below freezing the other day a plate cracked on the back of the cylinder head and now water leaks out as fast as I can put it in.
This plate is on the back of the Cylinder head/block next to the firewall. it is about 6" or so in diameter and is bolted on. What is this part called and where can I get a replacement? How much is it?[/quote:e3149b3828]

Hey Randy,
Sounds like a freeze plug went. I recommend you stop just adding water as it only makes your troubles worse by causing rust/corrosion in the engine block and head!!!! Antifreeze is designed to inhibit this! as to the cost of the part I really couldn't say, but if it is a bolt up style plug I'm pretty sure only jaguar will have it.

Chris

the part is called a water port cover. it is on the back of the cylinder head and has 6 bolts holding it on. it also has a yellow gasket that will go between it and the block. this would be a dealer part i also have one in my garage as i am a jag mechanic hope this will help

fstranger302....question for you ever heard of turbos being put on jags...the only jag w a factory turbo is the xjr....im buying a 1994 xj12 and wanted to put a turbo on it if it can be done w out lots of fabrication...also please let me know buy email replay if you take on other people's jags to work (of course depending on what state you are in
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