The part #s for the OEM iPod interface have changed a few times over the years, always with an increase in price. But has the functionality of the unit changed at all? I've asked around the dealerships and I can't seem to a get a clear answer to this question. Any insight into the price increases would be appreciated.

iPod Interface Part #
-----------------------

65 11 0 409 341 - Gen 2 - $149.00

65 11 0 035 964 - Gen 3 - $185.00

65 11 0 439 432 - (Gen ? this is the newest model) - ~$250.00


Only the first # shows up on RealOEM.com - but it seems its now discontinued. Does anyone know the details?

Thanks!