Toyota matrix 06, 02 sensors

it has two, one upstream and one downstream,no,they are not the same. correct application depends on which 1.8L engine you have. 8th digit of the vin# is either an R or Y, also if FRW or RWD, also rear disc brakes or rear drum brakes. https://www.autozone.com/engine-management/oxygen-sensor https://www.autozone.com/engine-management/oxygen-sensor https://www.autozone.com/engine-management/oxygen-sensor https://www.rockauto.com/en/catalog/toyota,2006,matrix,1.8l+l4,1432847,exhaust+&+emission,oxygen+(o2)+sensor,5132