For sale is a NEW "Genuine" GM, ACDelco Reman MASS AIR FLOW SENSOR, Fits many 1999-2005 Lesabre, Park Avenue, Impala, Monte Carlo, Regal, Camaro, Grand Prix & Bonneville using the 3.8L V-6 Gas Engine, check first BEFORE you purchase. OEM Part number is: 19112543 GR. 3.682. Check very closely before you purchase to BE SURE IT FITS.  Dealer cost on this item is Much More Than This ! VERIFY your needs before you purchase. If you are unsure CHECK out the application charts or call your dealer to be sure.