Hi Janet, We appreciate you taking the time in sending us your feedback regarding the compatibility of the product. Be assured, I will be helping you in resolving this concern. Per checking, the part should have been for the downstream location. We will definitely, raise this concern to our warehouse to check for possible mislabeled parts. Nevertheless, I see that we have processed the return for you, the complete return information was sent to your email. However, based on the tracking numbers, none of the labels were used. Have you already returned the oxygen sensor? Please respond to the email I sent you as soon as possible. Regards, Jonathan G. Customer Advocate Team