BOSCH 15717 Premium Original Equipment Oxygen Sensor - Compatible with Select 1989-16 Ford, Jaguar, Lincoln, Mazda, Mercury

My Check engine light came on and when I scanned it with my scan tool I got code P0307 and P0420. I figured it had to be the O2 sensor. I called the dealer and they quoted me a price of over $140 for both sensors, I went to the local autozone and the price there was $43.99 plus tax for Part Number: 15717 Down-stream sensor and $46.99 plus tax for Part Number: 15718 Up-stream sensor. A grand total after tax of close to $100. I searched on my phone and found that Amazon had both for a combined cost of $60 plus free prime shipping. After I install these sensors my check engine light went away. These are direct fit for the Expedition, so there is no cut or splicing of wires required. P0307 A code P0307 may mean that one or more of the following has happened: 1 Faulty spark plug or wire 2 Faulty coil (pack) 3 Faulty oxygen sensor(s) 4 Faulty fuel injector 5 Burned exhaust valve 6 Faulty catalytic converter(s) 7 Running out of fuel 8 Poor compression 9 Defective computer P0420 1 A code P0420 may mean that one or more of the following has happened: 2 Leaded fuel was used where unleaded was called for 3 A damaged or failed oxygen sensor (HO2S) 4 Downstream oxygen sensor (HO2S) wiring damaged or connected improperly 5 The engine coolant temperature sensor is not working properly 6 Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe 7 Retarded spark timing 8 The oxygen sensors in front and behind the converter are reporting too similar of readings 9 Leaking fuel injector or high fuel pressure 10 Cylinder misfire 11 Oil contamination Edit: 04/02/2013 So far the o2 sensors are still working correctly. Also, I failed to mention in my original review, that this vehicle (2000 5.4 XLT Expedition) carries 4 o2 sensors. 2 upstream and 2 downstream. I only replaced the 2 on the passenger side because I knew they were bad due to an oil leak. If you are replacing your o2 sensors just make sure you know which ones are bad.

I replaced my Oxygen sensors to try to improve my mpg, I have not had a check engine light nor do i use cheap gas so i was not sure what to expect for results. Bosch is the perfect brand to go to in my opinion. All their parts are made well. There was anti seize pasted on the threads when i opened the box which shows their attention to detail. They threaded right in and plugged into the factory harness. The only issue i had was the wiring on the sensor was longer than factory (i guess to make it apply to multiply vehicles) but with some zipties it was clear of the exhaust. My truck started right up and actually idled about 200 rpm higher than normal. After the computer relearned with a fresh set of sensors, everything is normal. I did not notice any significant mpg gains, about a half an mpg but it is difficult to tell if thats the sensors the tranny that had to be rebuilt within a hundred miles of replacing the sensors (I was doing other work on the truck too). Overall i would recommend this for anyone replacing their Oxygen sensors. Also, the price on amazon is far greater than any auto store 1999 Ford Explorer 4.0 SOHC

I have always had great results with Bosch 02 sensors. Cheap brands tend to fail after such a short time. I purchased these(15718 & 15717) for my 1997 Ford Explorer 4.0 SOHC ~6yrs ago. They have been trouble free since. While I no longer own the vehicle, I know who does and they have not replaced them ~80kmi later. Bosch supplies a small tube of copper anti-seize with each sensor as well. Bosch reverse engineers all of their sensors based directly off OEM specs. They also test every sensor and use premium components for a very low failure rate. Best of all...MADE IN USA!! I highly recommend buying these. I liked this small excerpt their site: "One of the largest Bosch oxygen sensor factories is located in the U.S. in Anderson, South Carolina. We have been producing O2 sensors here since 1991 and we currently produce 15+ million sensors annually. Our O2 sensor reverse engineering team is located within this OE facility and is solely dedicated to serve the aftermarket division of Bosch. For oxygen sensors where we are not the OE supplier, we will reverse engineer the sensors and produce them on exactly the same production lines as our OE oxygen sensors. No other O2 sensor manufacturer has this unique capability. Between our OE O2 sensors and our reverse engineered sensors roughly 90% of our annual sales get produced on Bosch OE production lines."

Great buy! Fits perfect and working to expectation.

Perfectly fit, got correct values

The Bosch 15717 Oxygen Sensor is a high-quality component that offers precise and accurate readings of oxygen levels in the exhaust system. Designed with OE type fitment, it seamlessly replaces the original sensor, ensuring proper compatibility and functionality. This sensor plays a crucial role in monitoring and adjusting the air-fuel mixture, optimizing engine performance and reducing emissions. The durable construction and reliable operation of the Bosch 15717 Oxygen Sensor make it a trusted choice for vehicle owners looking to maintain the performance and efficiency of their vehicles.

Quedaron perfecto y se borraron mis códigos de error.

Works as it should will buy again if needed

Excelente producto instalación fácil

Excelente producto