Water pump OEM Audi or Hepu

I'll confirm that too (don't remember if it was iron or steel though). But I was highly skeptical too until I saw it w/ my own eyes. But definitely metal, made by German aftermarket manufacturer Hepu, AND it was cheaper than the OEM one w/ plastic impeller. Also that description on ECS's website must have changed recently because when I bought it, there was no mention of the impeller being metal. But Tom@ECS came on here and confirmed it. Still begs the question though if a metal impeller is really any better than the plastibake one if you change it out w/ the belt at 50-60K. I wouldn't hesitate to switch back to the plastic one if that's what I had on hand.

I got my Hepu pump (all metal) for a little over $40 from Euclid Foreign Auto in Euclid Ohio.

My waterpump developed a crack 3 weeks ago and I started to leak coolant. Car had 20,000km on it. Had it all replaced under warranty. Was open about the mods on the car as well and dealership didn't give me any issues.

This was a Hepu pump. With far less than 60k miles. I'm thinking the coolant had gotten too old. Can't figure why else the pump would wear so fast. Noise statrted after coolant change, am running an AC delete setup.

I just lost my motor on christmas day due to water pump failure (hepu brand)

Waterpump failure at 26k factory installed (plastic impeller, bearing)

Not true. The maintenance schedule for the belt is 105,000 miles. Many of the pumps with plastic impellers fail before that. The plastic composite seems to age and become brittle after 70k or 80k miles--some sooner and some later. But they do fail. This is what happens: