2021 Toyota Highlander Oxygen Sensors & Components
![Toyota Highlander Oxygen Sensors - 2021](https://ic.carid.com/pages/oxygen-sensors/oxygen-sensors-components_0.jpg)
- TRQ®Downstream Front O2 Oxygen SensorToyota Highlander 3.5L 2021, Downstream Front O2 Oxygen Sensor by TRQ®. TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$30.35$31.95Save $1.60 (5%)
- Original (OEM)Emission Control PartsAlong with power, your engine produces carbon monoxide, oxide of nitrogen, hydrocarbons, and other hazardous gases that cause harm to the environment. To minimize air pollution, all vehicles are equipped with an emission control system...
- Toyota OEEmission System - Emission ComponentsToyota Highlander 2021, Emission System - Emission Components by Toyota OE. There's no better way to make your Toyota look and perform the way it should than relying on genuine Toyota OE parts. Unlike many aftermarket parts, these are...Genuine Toyota OEM parts designed to fit perfectlyCrafted from high-grade materials to ensure superior quality$95.85 - $363.32
- Toyota OEEmission System - Emission Components (2.5L)Toyota Highlander 2.5L 2021, Emission System - Emission Components by Toyota OE. There's no better way to make your Toyota look and perform the way it should than relying on genuine Toyota OE parts. Unlike many aftermarket parts, these...Genuine Toyota OEM parts designed to fit perfectlyCrafted from high-grade materials to ensure superior quality$9.19 - $628.11
- Dorman®OE Solutions™ Oxygen Sensor Bung Repair KitOE Solutions™ Oxygen Sensor Bung Repair Kit by Dorman®. Why replace an exhaust pipe because of a corroded, stripped or damaged oxygen sensor bung? Save the pipe and replace the bung with this weld-on replacement. Standard O2 sensor...Repair-friendly solution - this oxygen sensor bung allows replacement of a damaged fitting without replacing the entire exhaust componentUniversal fitment - designed to accommodate standard oxygen sensor threads$10.40 - $12.18
Shop By Service Type
If you are looking for a 2021 Toyota Highlander oxygen sensor, don't go any further! At our store, we carry a wide array of oxygen sensors from such world-renowned manufacturers as Denso, Bosch, Spectra Premium, Dorman, and many others. All oxygen sensors you'll find on this page feature direct OE connectors and can be installed on your 2021 Highlander without any additional modifications. We also offer a variety of related products, namely wire extension harnesses, gaskets, and fittings. Choose products you need and let your Toyota operate at its peak!
So, why are oxygen sensors that important? Often referred to as O2 sensors or lambda sensors, oxygen sensors provide the engine management system with accurate inputs about how fuel mixture is burning. Using this data, vehicle's ECU can regulate air/fuel mixture. Primary 2021 Toyota Highlander oxygen sensor measures the content of oxygen in exhaust gases, and secondary O2 sensors monitor the operation of a catalytic converter. If any of these O2 sensors fails, ECU can no longer get correct signal outputs for the proper air to fuel ratio, which can result in poor engine performance and decreased gas mileage.