Update. I got a new Crankshaft Vibration Damper pulley for a BMW 325,525,725, also suitable for the Opel Omega 2.5, so should be the same as the P38 2.5. The part number is DP0025, a nd it cost £75+v as opposed to the hundreds for the P38 listed item. I also had a tool made to hold the flange to...