Oxygen Sensors for Toyota Tundra (2007-2011) 5.7L Upstream & Downstream

Direct-Fit Complete Oxygen Sensor Kit for 2007-2011 Toyota Tundra (XK50)

What it Does: The complete 4-piece oxygen sensor kit restores closed-loop fuel metering and emissions tracking on the 2007-2011 Toyota Tundra to resolve check engine lights and eliminate rich or lean running conditions.

The Stock Toyota Tundra Exhaust Sensor Degradation

Exhaust gas sensors operating in the 3UR-FE exhaust stream face severe thermal cycling and chemical contamination from combustion particulates, fuel additives, and sulfur. Over time, silica contamination and carbon buildup coat the ceramic zirconia diffusion elements, drastically slowing signal response rates. On the second-generation XK50 platform, aged upstream wideband air-fuel ratio sensors and downstream heated oxygen sensors cause inaccurate short-term and long-term fuel trims. This calibration drift results in delayed catalytic light-off, rough idling, excessive fuel consumption, and diagnostic trouble codes including P0130 through P0161, as well as false P0420 and P0430 catalytic threshold errors.

The Engineering Solution

This four-sensor replacement kit delivers precision-matched planar zirconia sensing elements housed in high-grade stainless steel bodies designed to withstand sustained exhaust gas temperatures up to 1,000°C. The upstream sensors utilize fast-acting ceramic internal heater elements that achieve stoichiometric closed-loop operating temperatures in seconds, minimizing cold-start tailpipe emissions. Each unit features OEM-calibrated wiring lengths, factory-style weather-sealed locking connectors, and pre-threaded M18x1.5 bungs for true plug-and-play installation without wire splicing or pin repinning.

What's Included

• 2 Upstream Oxygen Sensors (Air-Fuel Ratio Sensors)
• 2 Downstream Oxygen Sensors

Technical Specifications

Compatibility

• 2007-2011 Toyota Tundra 5.7L V8 (Base, SR5, Limited, Platinum)

Frequently Asked Questions & Fitment Warnings

Does this fit the XK50 Tundra?

Yes, this is a direct fit for the 2007-2011 Toyota Tundra equipped with the 3UR-FE 5.7L V8 engine.

Should anti-seize be applied to the sensor threads during installation?

Apply high-temperature anti-seize exclusively to the threaded body while taking extreme care to avoid contaminating the sensor probe tip.

The Toyota Workhorse Standard

Heavy towing and extreme payload demands place sustained high exhaust gas temperatures on the Tundra powertrain; refreshing your complete oxygen sensor suite ensures peak combustion efficiency, maintains engine torque under load, and protects your catalytic converters from rich unburnt fuel wash.