OKAY MOTOR Rear Right Oxygen Sensor for 04-10 Toyota Sienna 3.5L Bank 1 Sensor 2 Position: Downstream, Bank1 Sensor 2 Part #: 5S4574, OS2495, 234-4516, SG1658, 89465-08030 New Aftermarket Replacement Unit. 180-days Manufacturer Type Warranty Limited. Applications: Toyota Sienna 2004-2006 3.3L; Toyota Sienna 2007-2010 3.5L