vs
Water pump GMB or Pierburg
Pierburg is the OEM maker of the BMW water pump. Spending the extra for the BMW is ridiculous when they are 100% the same exact same pump from the same company from the same factory.
Pros: OEM quality, same as BMW
Cons: BMW overpriced
Vehicle:
BMW
I have their water pump on my Rx7, it's been A-Okay for over 3 years.
Pros: A-Okay for years
Vehicle:
Mazda
I'm working on adapting these water pumps to a variety of older engines. This one will be going on a Chevy LSx. The pumps support two different control schemes; one via PWM (no feedback) and one via LIN. I will be working on reversing the LIN communications and building a more sophisticated controller soon.
Pros: supports PWM and LIN
Cons: reversing LIN communications
Vehicle:
Chevrolet
Excellent time to learn to do it yourself and buy a $65 water pump and timing belt kit. Dirty cheap for the miata. Just find a kit with a GMB water pump and a name brand belt.
Pros: dirty cheap
Vehicle:
Mazda
PIERBURG makes a good water pump...
Pros: good water pump
I've used GMB some 10+ years ago. They were made in Japan and came with a lifetime warranty.
Pros: lifetime warranty, made in Japan
Sounds like your water pump is shot. The impeller is spinning on the shaft and not pushing the water. I just had a customer who had this problem. The crazy thing is, I just replaced the pump about 2 years/30K ago with a GMB pump. He had the exact same symptoms as you: car gets hot, but does not overheat, no water through the return line, and fan takes a long time before it turns on.
Pros: customer had same symptoms
Cons: pump replaced 2 years ago
Mileage: 30000 km
It happens. I’ve had maybe 3-4 do this out of probably 300 we’ve changed at the shop. Once was a pierburg but the rest were autozone duralast etc.
Pros: warranty may cover labor
Cons: pump may fail quickly
Vehicle:
BMW
Melling and Aisin are both premium WPs. Airtex is pretty good. GMB is ok.
Pros: ok quality
I put in a GMB in my '02 two years ago, and it's leaking already.
Cons: leaking, short lifespan
Vehicle:
BMW
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