Part number: MER-0015401017 is a new, unused Genuine Mercedes oxygen sensor. Your oxygen sensor works with your car's computer to optimize your engine's performance. If it is not working properly the result could include reduced fuel mileage, failed emissions testing as well as a check engine light.
Genuine Mercedes parts represent the best value in Mercedes parts. When you consider the quality, price, and lifetime that you get from the part you quickly realize there is no substitute for Genuine Mercedes engineering
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