Water pump Hepu or Pierburg

It was a while ago, but I think I used a HEPU pump when I did mine.

PIERBURG makes a good water pump...

Hepu--the bomb,99% reliability,MADE IN GERMANY.

Graf and Hepu make 12v metal impeller pumps, direct fit no mods.

Any replacement whether it br Graf or Hepu are going to have a metal impeller and be an exact factory replacement. The wheel itself will be identical in shape and circulate the same volume of coolant.

I ordered one from MJM Autohaus, a Hepu unit and its impeller is metal

Metal impeller model is available but can be hard to find (Hepu brand). Recommended interval for changing is 80-100K depending on who you talk to. But many fail earlier and may fail as early as 20k. Change as preventive maintenance.

i bought the dieselgeek timing belt kit which includes the Behr german Thermostat and Hepu water pump. he says that the stock OE style thermostat is better and the reman OE pump (which now uses metal impellors) is better than the hepu.

I picked the pierburg for all aluminum casing and impeller. They were both about the same price last time I needed to get one. Note that the pierburg failed at not even 10k miles. I replaced with another pierburg chalking it up to bad luck. The only advantage I can think of with the pierburg is the fact that you can torque down the hoses that use clamps and not have to worry about cracking the housing. But in reality doubtful that is a risk. Also it won’t be in service long enough to get brittle enough to matter.

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.