Noticed there are two different oxygen sensors listed for my 99tl on web site showing the parts breakdown. The car is a california emissons car ( 50 states). This is the one in the CAT and mounts on the side. They are 36532-P8C-L21 and 36532-P8C-L02. Anyone know what the difference is and which on is right for my car. VIN begins with 19UUA5649AX0270**.

Fred