I'd bet you the "Mopar" one from the dealer is the RIGHT part for the car and that it will turn out its a Bosch. When it comes to electronics and in particular sensors, the car is all Bosch.

The secret is to not buy it from a damn dealer. My Bosch Crank sensor was $45 from German Auto Supply, they are over 3 times that at a dealer.

You can order original Bosch O2 sensors here for around $100 each:
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