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I just did this job Friday night.
Pierburg equals Porsche OE. Pierburg makes the pumps for Porsche. Only difference is the box, the Pierburg I bought even had the Porsche part number cast and stamped into it. Same for the Wahler thermostat, but the Porsche part number casting was ground off of the housing.
Zerex G-05 coolant works well (as it does in all-aluminum Mercedes-Benz engines) if you don't want to shell out $35/gallon for Porsche coolant concentrate.
May as well change the thermo while you're in there since it's right next to the pump and you'll lose coolant anyway. Why do it later?
Avoid any pump with a metal impeller as that can cause engine block damage if/when the bearing goes out, while composite will not do that.
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-Chris
2004 Porsche Boxster 2.7 (gone  )
2004 Porsche 911 C4S Cab
1991 Porsche 911 C2 Targa 3.6
2017 Subaru Outback 3.6R
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Boxster
Threaded Mode
