Walker Pro 5/7/2013Hello Frank,
The only information I can give you, is that there is only one sensor on this vehicle but 2 options a calif-ESV(3 wire sensor) and a Non Calif-esv (1 wire sensor). In both cases ours is a direct fit oem replacement.
If you have any further questions or concerns please contact us and we will be happy to help.
Walker Pro (www.walkerproducts.com)