Winemangv

The display screen (the no nav version) on the Centre Display on my 2008 RX400h is starting to discolour. Searched online, and found that some parts stockists do sell just the screen module sub-assembly, P/No: 86602-48130. However, the local Lexus dealer here says that, according to his parts catalog, the correct replacement part is P/No: 86602-48140. I cannot find this part number anywhere online. Does anyone know what is the difference between the two parts, and if 86602-48130 is compatible to my car? My vehicle VIN # is JTJHW31U002864312.
Would appreciate any info please.
Thank you