hiya mate,
some info as follow:

84109162982
Charging electronics, hands-free
BASIS

From:08/01/2007To:10/12/2007 (ENDED)Weight:0.520 kgPrice:$506.20

Superseded by:
84109178862 (09/01/2007 — 03/20/2008), Bilaterally exchangeable
84109181378 (03/01/2008 — 10/22/2008), Bilaterally exchangeable
84109195246 (04/01/2008 — 09/16/2008), Bilaterally exchangeable
84109200821 (09/01/2008 — 10/18/2008), Bilaterally exchangeable
84109204545 (10/01/2008 — 04/16/2009), Bilaterally exchangeable
84109215184 (03/01/2009 — 09/16/2009), Bilaterally exchangeable
84109221029 (09/01/2009 — 06/18/2009), Bilaterally exchangeable
84109224673 (09/01/2009 — 04/21/2010), Bilaterally exchangeable
84109226711 (03/01/2010 — ), Bilaterally exchangeable

Supersedes:

84109147516 (05/04/2006 — 06/28/2007), Exchangeable retrospectively
84109163348 (05/01/2007 — 09/20/2007), Bilaterally exchangeable
84109149656 (03/01/2007 — 05/17/2007), Bilaterally exchangeable
84109132539 (09/01/2006 — 02/23/2007), Exchangeable retrospectively
84109128722 (09/01/2006 — 06/09/2006), Exchangeable retrospectively
84109123290 (05/29/2006 — 01/16/2010), Exchangeable retrospectively
84109116725 (03/01/2006 — 07/05/2007), Exchangeable retrospectively
84106983330 (03/01/2006 — 11/28/2005)

Part 84109162982 was found on the following vehicles:
X5 E70 ? (02/2006 — 03/2010)

source:
http://www.realoem.com/bmw/enUS/partxref?q=9162982

hope this will help