have driven the car very hard at times and my original plastic pump/thermostat assembly has not failed to date (>10,000km). So this "upgrade" is purely a preventative measure on my part.
All the 3.0TFSI engines rolling off the factory plant now use the new part, so if you have ordered a S4/S5sportback or other car equipped with a 3.0TFSI engine not arrived yet. You will be getting the new full aluminum pump.
Here are some pictures of a DIY install of the upgraded water pump. At the same time the Singapore cars will also get a thermostat change also (tho the part number is exactly the same as the old one, no superceeded part). The factory protocol does not mandate that the thermostat be changed but the dealer here in Singapore has decided to take an extra step up and package the upgrade with both parts just to be on the safe side.
One take home message here is that for genuine original parts, good to see that there is a continual improvement and rectification of problem issues. I am delighted to see that any such improvement are carried down to serial production also.
Singapore dealer will take 2 days to do this upgrade for you. I strongly suggest you do not try this at home unless you have al the special tools, torque wrenches and knowhow to do the job. It can be real tricky at times as one connecting pipe is not easy to mobilize at all!
The supercharger also needs to be removed to access the thermostat housing.
here are the pictures of the job.......... hardcore DIY guys can try
OLD VS NEW WATERPUMPS