I've had my mk6 for 5 years and driven it 50,000 miles (total 130,000) on the same water pump.
I've been tracking my E36 for many years with the more affordable Bosch pump and the only problem I had was the main o-ring seal flattening and seeping. They're so cheap that you could buy multiple of them and still spend less than the Stewart pump. Never had an issue with coolant temps, even when doing 20-30 minute sessions on the track all day at WOT.
There’s a really good kit that come with gates timing belt, tensioner, idler, Aisin water pump, Toyota cam and crank seals and a serpentine belt for $350 I used it and everything has worked perfectly
You should be fine with the Aisin. They were the OE manufacturer for a lot of makes.
60k on my mk7r, hasn't needed anything but maintenance. Water pumps were a known issue on early mk7 but from my understanding have been resolved in new part revisions with upgraded metal internals.
I have had very good experiences with the NEW Gates pumps and they make a replacement tube as well. I have installed them in 17 4.0 engines over the last 4 years and had no comeback failures.
I’ve had my car for over 5 years now and currently have 140k miles, and my water pump just recently failed me. Which is surprising because my car did lose a little bit of coolant over time, I would always top off with G13. Water pump failed and it’s currently being replaced, other than that, I think that’s fair for age and mileage.
Mine failed in my 2015 Golf after 11,000km.
My 2016 Mk7 GTI is on its 4th water pump/thermostat housing. The first replacement happened at about 27K miles, the second failed at 63K miles, and the third failed at 72K miles. I fully expect this one to leak again soon. I find it ridiculous that VW/Audi don't fix a faulty part after all these years. The plastic thermostat housing is to blame. Instead of a metal housing which can handle the thermal stresses, they continue to use a plastic housing which will start leaking sooner or later.
Only 4 water pumps, 1 manual clutch assembly (broken spring on pressure plate) and 48K miles on my MK6
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