Real OEM doesn't show different part numbers that year, but they do list two distinct pages of parts for the tire pressure monitoring system, depending on whether the vehicle has option code S2VBA, which is labelled Tire Pressure Display. It is shown in conjunction with Canadian models. One could imagine that the coding would be different with and without that option.

It may be that Realoem is inaccurate and there are two part numbers. Ask the dealer to give you the part number, and compare it to that shown in realoem.

RealOEM.com * BMW E70N X5 35iX Tire pressure control (RDC) - ctrl unit

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue