Oxygen Sensors for Toyota Tundra (2012-2016) 5.7L Upstream

Direct-Fit Upstream Oxygen Sensor Kit for 2012-2016 Toyota Tundra

What it Does: The Upstream Oxygen Sensor Kit replaces degraded factory air-fuel ratio sensors on the 2012-2016 Tundra to restore precise closed-loop ECM fuel trim feedback, smooth idle quality, and optimal combustion efficiency.

The Stock Toyota Tundra Sensor Degradation

Operating a hard-working half-ton truck subjects exhaust hardware to intense thermal cycles. On the XK50 platform, factory upstream air-fuel ratio sensors routinely suffer from ceramic element poisoning due to carbon buildup, oil blow-by, and silica contamination over high mileage. As internal heater circuits degrade and sensor response slows down (lazy voltage switching), the factory engine control module defaults to conservative, rich fuel tables. This leads to rough idle conditions, increased exhaust gas temperatures, unburnt hydrocarbon build-up in the catalytic converters, and persistent diagnostic trouble codes like P0135 or P0155.

The Engineering Solution

This direct-fit 2-piece upstream sensor set engineered for the 3UR-FE V8 utilizes high-temp planar zirconia sensing elements protected by a laser-welded, dual-layer 300-series stainless steel shield. The integrated fast-light-off ceramic heater quickly achieves operating temperature to minimize cold-start open-loop run time. Built with a porous PTFE filter membrane to shield against moisture intrusion and ambient contamination, these sensors deliver rapid stoichiometric switching and accurate wideband voltage feedback directly to the ECM without signal delay.

Technical Specifications

Compatibility

• 2012-2016 Toyota Tundra SR 5.7L V8 (3UR-FE)
• 2012-2016 Toyota Tundra SR5 5.7L V8 (3UR-FE)
• 2012-2016 Toyota Tundra Limited 5.7L V8 (3UR-FE)
• 2012-2016 Toyota Tundra Platinum 5.7L V8 (3UR-FE)
• 2014-2016 Toyota Tundra 1794 Edition 5.7L V8 (3UR-FE)
• 2015-2016 Toyota Tundra TRD Pro 5.7L V8 (3UR-FE)

Frequently Asked Questions

Does this fit the XK50 Tundra?
Yes, this is a direct fit for the 2012-2016 Toyota Tundra equipped with the 3UR-FE engine.

Will replacing upstream sensors clear check engine codes like P0135 or P0155?
Yes, replacing tired upstream sensors fixes open or high-resistance internal heater circuits, clearing related DTCs once engine runtime reset cycles complete.

The Toyota Durability Standard

Engineered to handle the thermal demands of heavy payload hauling and cross-country towing, this sensor package restores original factory calibration parameters and protects downstream catalytic converters under severe work-truck duty.