1996 Avalon, P0135 O2 sensor, bank 1 sensor 2

The P0135 bank 1 sensor 1 is the one on the right exhaust manifold, between the engine & firewall, which is tough to get to. You will need the special slotted socket. The Bosch replacement is available at NAPA or Advance for about $190. I bought two for my 03 Avalon on Amazon.com for $110 each. p.s. DO NOT buy the version that you reuse the plug from the old sensor. Learned that the hard ($) way.