Part #: 17444. WARRANTYWarranty Duration: 1 Year. Our goal is to always have what you need when you need it. We are confident you will soon make us your first choice for all your auto parts needs.
On the smart 451 (fortwo) I have found that only the Bosch Sensors work well, Both the upstream and downstream sensor parameters are such that off brand sensors will not always work and if they do it is for a short time. This Part works great!!