Bosch Premium Thimble Type Sensors utilize an electrical heating element inside the thimble-shaped end to bring the sensor up to operating temperature in less than a minute. The patented thimble ceramic element featuring the Bosch patented Platinum Power … see full wiki
Recently the dreaded "check engine" light came on in my sons 1998 Ford Contour. He took it to a local auto parts store that offers free use of their diagnostic equipment and the result was that the upper oxygen sensor needed to be replaced. Checking with them it was going to cost about around $65-$70 with tax. Being the bargain shopper I am, I asked him for the part number and was pleased to find it here on Amazon for less than $50 at the time of my purchase. With 2-day shipping and we had it before the weekend and replaced it just as quickly. There are some universal fit sensors sold here on Amazon that say they would have worked too, but the price difference wasn't enough to keep me from buying the OE part. It was a perfect fit and the light is no longer on. Also if you don't already have a Oxygen Sensor Socket, get one - it'll save not only time, but headache too. With this being my second purchase of a replacement auto part here on Amazon, I would highly recommend checking them out; sometimes the savings is significant.
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