Well here is waht I have in my personal technical notes file. This info took quite some time to research (as always) so I make detailed notes where I can.
EGR Valve
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Part Number Changes:
07/2004 P/N: 46823850
10/2005 P/N: 55194735
04/2008 P/N: 55204250
mm/2009 P/N: 55215031 -> This is also latest Pierburg P/N: 7.000.63.10.0
Pierburg P/N: 7.000.63.10.0 replaces ALL the above part numbers
(sub details on valve purchased on Sept 2010
Manf.Date: 23 FEB 2010
Main P/N:7.000.63.10.0
Solenoid P/N:5.00240.05 10T035
Casing P/N:55215031 - Fiat P/N
Valve Casing P/N: 7.00063.11
P/N: B004.0033A )
EGR Valve Gaskets.
Inlet gasket is P/N:46773082
Outlet gasket is P/N:55191883 (original)
Outlet gasket is P/N:55225287 (new bullet hole gasket)
Outlet gasket is P/N:71751468 (new alternative bullet hole gasket - more expensive than 55225287)
Pierburg valve available from:
Emission Controls (
www.emissioncontrols.co.uk) Tel.020 8462 2543
RS Engine Supplies Tel.01233 661458
Kimber Friction, Soton