need help

[Deadshot]

hey guys i have a 04 325i and i need to replace the AC belt and oxygen sensor but i dont know which one to buy for my model. Could you guys help me? im planning on buying it from pelicanparts here are the link to them

Oxygen Sensor- i dont know what the length i need to buy. :confused:
http://www.pelicanparts.com/bmw/catalog/shopcart/BE46/POR_BE46_FULint_pg2.htm#item11

AC belt- i dont know what size to buy :confused:
http://www.pelicanparts.com/bmw/catalog/shopcart/BE46/POR_BE46_WATpmp_pg2.htm#item7

Thanks :thumbsup2:

[Laidback]

check this out

http://www.realoem.com/bmw/

[t3stman]

+1 on the web site

[BlackOnBlack]

best website! love using it for reference! :thumbsup2: