Seller notes

Feature: The front oxygen sensor is to detect the air-fuel ratio of the engine in different working conditions. The rear oxygen sensor is mainly to detect whether the three-way catalytic converter works normally.100% test before shipment.The reduction of harmful emissions.The increasing of fuel economy.The improvement of engine performance.Prevent premature failure of the catalytic converterSpecification: OE number:234-4513,234-9109Replacement: Direct Plug-In ReplacementCondition: 100% Brand New...

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