Direct Fit Lambda Oxygen Sensor - IMPORTANT. THIS ITEM MAY NOT FIT YOUR VEHICLE AS THERE ARE OTHER PART CHOICES. Up until now the lambda sensor market has been very confusing. BMW 5 Series E39 520 | 2.0 520i | Sep 95 - Sep 00 | Position: Front (Pre Cat) | Engine Code: M52B20 | Chassis Info: inc.
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