Just finished replacing my MY06 NA convertible thermostat housing after some minor overheating. I had roaring fans but not even a orange warning light. Thanks to all the posters who have contributed to the many treads that allowed me to diagnose the issue and fit the replacement housing and thermostat. It was the crumbling plastic lug in the cover with the broken pipe inside the plastic housing as the root cause.

Thanks again to this wonderfull helpfull forum, I am back on the road.

 

I usually keep one on the shelf and ready to go as I'm already onto my 3rd...a nice aluminium alternative would be fantastic

 

What's the shelf life Steve?

 

I'm onto my 3rd so I'd say I'm swapping mine out every 4-5 years or so , lol I also have wheel bearing hubs ready to go ....being in Australia unless you buy genuine your going to be waiting a while from US suppliers so i always have a few serviceable items ready

 

Geoff,

Good to hear you caught it in time and got it fixed. Too many overheat incidents on the Jaguar V8 end in a destroyed engine.

Graham

 

I have heard ( really: read ) that a thermostat housing of a Land Rover will fit, and is made of metal.

As I was then ordering spare parts for my 2007 XK Convertible, I asked for that.

The guy there said, yes, and that he has it. So I just ordered it. Have unpacked and checked packing list, but never did compare it to the thermostat housing IN the XK.

If anything in there faills, I will give all parts to the mechanic, and ask him to check.

It was not expensive. Very reasonable.

If the first part of the cooling hoses/system fails, I´ll have everything replaced at once.

Hermann

 

Could you post the part number(s)?

 

I have a Range Rover n/a 4.4 engine AJ41. The thermostat is plastic, .....however the supercharged 4.2, including range rover s/c 4.2 have metal thermostat housing (very different to the n/a)

 

Hey this forum is all mixed up! There is a metal one for XK8's (I have one for my wife's XK8) but I have never heard of a metal one for XK's (x150). Am I right??
If so please enlighten me with source and part no....................thanks, Adrian.

 

im guessing thats a 4.0 aj26/aj27 then ???

 

Steve what is a 4.4 L 2007 V8? I know you chaps live upside down !! but 4.4L x150? Still think plastic only choice............

Cheers Adrian, founder member Seattle Jag Club!!

 

You must not have kept up on Steve’s postings. He replaced a 4.2 L with a 4.4 L. Search this forum, you’ll find pictures and everything.

 

Anyone found a non-Jag 4.2 NA housing they trust from a third party? Thanks

 

I bought a China Junk for $35 from Amazon complete with gaskets and thermo...................just as a spare; unbelievable conplexe design, never seen anything like it in my life (88)!
used Part No. AJ811793 for purchase. I hope I never to have to use It!!!

Part no's always help Guys really............

Cheers, Adrian

 

Hi Hermann,

Would you have the reference for your Aluminium piece? What engine/model of Range does it fit on?
What Jaguar X150 will it fit?
Thanks.

 

X100 4.0 xkr & xk8 both have aluminium housing
X150 4.2 xkr aluminium housing
X150 4.2 xk plastic housing (these are the ones that disintegrate)
RR 2005-2009 4.4l plastic housing (as above these disintegrate and the whole unit needs to be replaced )

Hope this helps

 

Oh I see. Thanks.
One thing less to be scared of.

 

Steve-k-xk
Your info without Part No's is of no help! I did find Al. one for Ford V6 completely different.

Adrian

 

Never worried about the argument of "cheap" plastic. Yes they fail. We've all read about it here. Mine is @ 84,000 miles and is 17 years old and there's the rub. I will swap out the housing, stat and prolly some hoses next 5 year service due which is in 2 years. I know the techs here recommend changing them out during scheduled maintenance so I'll follow their lead. @panthera999 , one of the techs (can't recall) recently responded to the same question. His reply, buy the OEM from SNG Barrett, and he was OK with the non OEM that they sold as well.

 

Adrian you have the correct part number AJ811793 but there is no aluminium housing for 4.2l , in regards to the xk8 4.0 and xkr 4.2 these aren't compatible and being aluminium not plastic these have to rarely be changed its the internal thermostat that is usually replaced