AF10043 Mass Air Flow Sensor

I replaced the MAF sensor on my vehicle after dealing with a rough idle and hesitation that cleaning the old sensor just wasn’t fixing anymore. I went with the Delphi AF10043 since Delphi is an OEM supplier, and I’m glad I did. Install was straightforward. Unplug the connector, swap the sensor, and that was it. No relearn procedure needed in my case and the check engine light cleared immediately after a short drive. The difference was noticeable right away. Idle smoothed out, throttle response felt normal again, and the hesitation on acceleration is gone. Fuel mileage even seems a little better, though it’s still early to say for sure. Build quality looks solid and matches the original sensor that came out. Fit was exact and the connector snapped in tight with no play. It didn’t feel like a cheap aftermarket part, which was important to me since MAF sensors can be hit or miss. I’ve had it installed for a few weeks now with no issues, no warning lights, and no weird drivability problems. If your symptoms point to a failing MAF, this is a solid replacement and cheaper than dealer pricing. Wouldn’t hesitate to buy it again.

The negative reviews had me questioning this with stories of “Chinese junk,” open package and used status. The sticker that is supposed to tear when you open it, doesn’t, so the scam potential from a returned item is possible. Side note: I’ve only gotten one item where someone returned only half the item from the box. Losers will be losers. The MAF was new in the box and unused. 15 minutes later, it’s in the truck. No more P0101 codes or any other issues. I put the thing in, cleared the stores code, drove to get the emission testing complete and it passed with no issues.

Perfect fit. Saved me a trip to the auto mechanic. Replaced in no time. Definitely recommend. Fair price as well.

100 % G A R B A G E !! My truck was showing to lean codes for both banks. So I ordered this MAF, waited for a warm day to change it. Just like other reviews, the bag wasn't sealed, it didn't look used though. It was even worse then the one I changed out, truck wouldn't stay running and it had voltage codes as well. Of course the return window closed because I waited for the weather. $80 bucks into the trash, don't waste your time or money, if you need a MAF go to a local parts store.

Item arrived very quickly and in proper packaging. Despite it not being listed as fitting my 2004 Avalanche Z71, the part number did cover the replacement of the part number on my truck. I was getting P0101 MAF sensor circuit failure, P0171 lean condition on bank one, and P0172 lean condition bank two. I first ended up changing out the intake manifold gasket to eliminate that possibility since it is a known issue with these trucks, and cause the codes I was getting. If your intake gasket has a vacuum leak, your vehicle is getting more air than it thinks it is, causing the ECU to adjust fuel trim levels and resulting in the lean codes. It also will shoot the P0101 MAF code because the computer is reading more air coming in than what the maf is sensing so it triggers the code P0101 meaning that the readings from the maf were out of range for a period of time, usually four seconds, though there are other time ranges as well. Changing the intake gasket only got rid of my P0172 lean bank two code. So I ordered this AF10043 after seeing that the part #'s actually crossed. It took all of five minutes to change out. All you need to change these are an 8mm driver or socket, loosen the large hose clamps that attach the intake tube to the throttle body connection, the intake tube to maf connection, and the maf to air box connection. Unplug the maf sensor wire by simply pressing the clip and pulling away from the maf. If you have the double stage clip, there is a small shielding clip that slides over the tab of the maf so it wont accidentally get disconnected. To get the protecting clip off take a small flat head or pick ( I used a transmission line pick tool), get under each side of the tab and it pulls straight up, the clip will actually slide completely off exposing the tab to unhook the maf sensor. All of my CEL codes are now gone thanks to this product. I have verified my maf readings with my Bluetooth obd-II dongle in real time, and all are in proper ranges. I would recommend this product to anyone needing a new maf and I would buy again if I needed to. Thanks,

I'm a procrastinator. My check engine light has been going on and off for like 7 years and 80k miles driven in that time. Finally bought this and - as a lady (cough!) - I was able to do this nearly all myself. So easy to change it was embarrassing. Hubby helped with the muscle for the old original MAF that was hermetically sealed with dirt and grime, but otherwise a simple 5-10 minute fix. A simple youtube search before digging in. It fits my 2003 Tahoe 5.3L LT with 165K perfectly. Runs so much better now, mileage has greatly improved (from 15.3 avg per gal all the way up to 16.5 so far - woah...). The check engine light hasn't come on once since the change. UPDATE It lasted 2 months...aaaand the check engine light is back on again - exact same codes as before I put this one in. Less than 1k miles and it goes out. Not Happy. Now I'm forced to buy another one. Should lower my 5 star to 1 but I won't. bah...

The part did have the Delphi labeling but I was shocked to find "Made In China" on the MAFS. Part did work, verified with live scan data. On a 2005 Denali, mileage is now in the 13s. Hope I don't kick myself by not buying from a local parts house that offers lifetime warranty, this Delphi MAF sensor only has a year warranty. But like I said, 3 weeks in and still going strong.

This fit perfectly in my 2004 Silverado. First I tried one that wasn't Delphi and it didn't fit. My engine light went off. Easy repair with only a flat head screwdriver needed.