in the last 10+ years have been using HEPU waterpumps.
Reviews of Hepu water pump
123 votes
Ive reinstalled another new HEPU(made in germany) pump due to mileage. I don't think anything is wrong with the old one. When I cleaned the o-ring seal contact area on the block it was corroded right where it left an imprint.
If you're worried, replace both the water pump and thermostat. I would use a Mahle, Facet, or Wahler thermostat, and either a Hepu or Graf water pump.
Update. The replacement HEPU water pump is now leaking.. from the freeze plug…
Replacement HEPU water pump is now leaking… from the freeze plug.. gonna let it ride and try a different brand when I change the belt in 50K miles
I’ve now popped two water pumps. Each of them have sprung a leak from the freeze plug. I seat the pump and o-ring by hand then torque bolts to spec.. each time they’ve been good for about a month or so, then start leaking from the freeze plug.. both pumps have been made by HEPU.
I had a defective hepu pump that leaked also. Only had about 20k miles on it
It has a hepu water pump
GMB or Hepu pumps are generally good for 100k or more.\n\nThat leak is due to the donut like seal between the pump and the head.
When I was shopping around for cooling system replacement parts, I wasn't sure if GRAF or HEPU made a better metal-impellar water pump. I ended up purchasing both the GRAF and HEPU, and found the HEPU to have a better fit and finish compared to the GRAF.
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