you cannot buy just the rubber inserts from chrysler...you must purchase the entire metal blade assembly. $$$

i went to the local bmw dealer and purchased the universal wiper inserts (cut to fit sizing). this is the way they are sold for all bmws from '04 and older.
they work perfect.

total cost for two inserts... $5.

bmw part number: 10A 61-61-0-154-440 (wiper refill).