Review on Optimize your vehicle's performance with the Denso 234-4169 Oxygen Sensor by David Herrera

The hardest part was unplugging the connector. I couldn't get the camera at the right angle to get a picture of the tab on the connector tundra which has to be inserted with a screwdriver and twisted slightly to release the tab on the O2 sensor connector.Also I couldn't pull the O2 wires and unplug the connectors.The way I did it What I did was insert a screwdriver, twist and gently tug on the wires When I got it right you could see that the tab holder on the Tundra connector released the tab on the O2 connector (although it's hard to see Here's the next problem, there's no room for both hands to work on the connector, as soon as I thought I'd let go of the tab, I grabbed the O2 sensor connector and wiggled it, and he resolved immediately. A few days earlier I sprayed PB Blaster lightly on the O2 sensor, and to my surprise with little effort. A bad O2 sensor came right out with my O2 sensor plug. You need as much room as possible for your arms, hands and body to maneuver around Denso's 234-4169 oxygen sensor can be used for left (driver) or right (passenger) side* The O2 sensor is also referred to as Air-Fuel Ratio Designates Sensor. it's called Toyota * YouTube has a great video for sharing. Looking for: How to Replace Upper O2 Sensor 00-06 Toyota Tundra *Hope this helps another 1st gen Tundra owner