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2001-2003 BMW 325i Oxygen Sensor - Front - Bosch W0133-1607726
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Part Number: W0133-1607726
An oxygen sensor is a small electronic device buried in the exhaust system of your BMW 320i. There are actually two oxygen sensors--one measures the density of the air flowing into the engine and the other measures the content of the gas flowing out of the exhaust. Both of these are used to calculate values like timing and fuel richness and mixture. If one of your oxygen sensors has failed, the "Check Engine" light will come on and your engine will immediately begin to degrade in performance. A replacement oxygen sensor for the BMW 320i is available from Bosch to get your engine back to peak performance.
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I have ordered parts for various vehicles and have never had one single problem with the fit or quality! More than I can say for the local parts store!Very reasonably priced to boot!