Standard Motor 7884K Single Lead Spark Plug Wire Oxygen Sensor Set. Emission Control > Sensors > Oxygen Sensor Set.Single Lead Spark Plug Wire. This item is in the category "Automotive\Parts & Accessories\Car & Truck Parts & Accessories\Exhaust & Emission Systems\Oxygen Sensors". The seller is "partsterr_canada" and is located in this country: CA. This item can be shipped worldwide.