Mass Air Flow Sensor Meter MAF for Buick Impla LeSabre Chevrolet Impala Pontiac Penson & Co. is the onlly authorized seller of the brand "Aurelio Tech". 6-months warranty is offered only to those customers who bought the products from the designated authorized sellers. Manufacturer Part Number: AFH50M-05 AFH50M05 213-1617 213-952 12568877 88961007 Some vehicles might have their dashboards' warning lights activated after installing this item. This is probably NOT due to defects of the item, but rather because of wrong warning codes sent by the vehicle's internal system. If the vehicle runs smoothly, please ignore the warning indicator and use the computer diagnostic system to set the indicator light to "off". Otherwise, if the item is really faulty then your vehicle will experience wobble after engine is on, and you may ask us for full-refund with no hassle.