Your engine's best fuel efficiency happens when it has the correct ratio of fuel to oxygen. The Explorer oxygen sensor is the component that measures this ratio. Running too much or too little fuel causes emissions failures, which is bad for the engine, increases the inefficiency of your vehicle and damages the environment.
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Too much fuel in the engine creates excess carbon monoxide, while too much air produces excess nitrogen oxides. When the check engine light comes on in your SUV, it's often a sign that the Explorer O2 sensor is failing. We stock a huge selection of Ford Explorer replacement oxygen sensors and other aftermarket accessories to keep your vehicle in peak operating condition, reducing emissions and increasing fuel efficiency. Enjoy our 1-Year, Lower Price Guarantee on your entire order when you shop with us.