Originally Posted by spartacus
If you have the model number, you'll find it here.
You need to change the gasket at the same time. You can skim off the old gasket if it tears with a razor blade. Don't over-torque the bolts, nip up in sequence.
Cheers spartacus. Had a wee web chat with the website people which resulted in them giving me the wrong part number, which they also wouldn't deliver to the UK.
I eventually Googled the serial number on the thermostat cover and I've now got the right product through eBay for £40.
Never easy, eh?