Replacing plastic coolant pipes on a BMW Z3 M52TU M54

In this second episode of the coolant system refresh, the Z3 gets new plastic coolant pipes. And heater core hoses. And water valve hoses. And reservoir hoses. What I'm saying is, a lot of hoses get replaced.

I also show a tip for getting the end of a broken plastic coolant pipe out of the head, which involves a 3/4 tap and bolt.

This series follows the coolant system rebuild of a 2000 BMW Z3 2.3 Roadster, but it will apply similarly to any E46 3-series or E39 5-series that also uses the M52TU engine.

E1: Removing the intake manifold of a BMW Z3
   • Removing the intake manifold of an M5...  

New parts used:
11531705210 Heater inlet pipe
11537502525 Water pipe
11537505831 Expansion Tank Hose
64218362777 Hose f radiator and water valve
64218376608 Hose f water valve and engine return
64218377673 Hose f engine inlet and heater radiator
64218367179 Hose clamp L16-30 (x4)
11531436122 Connecting line
17107514964 Expansion tank
17117639022 Radiator cap (2.0 Bar)

Extra tools and supplies used:
20084 Vermont American 3/4-Inch 10 High Carbon Steel Machine Screw Plug Tap
801236 Everbilt 3/4 in. -10 tpi x 3 in. Zinc-Plated Hex Bolt
9150-00-905-1387 Kano Aerokroil Penetrating Oil, 10 oz. aerosol (AEROKROIL)