ACDelco 213-4251 | Mass Air Flow Sensor

Part Number
Mass Airflow Sensor

Fits: 05-09 Buick Allure, 05-09 Buick LaCrosse, 05-07 Buick Terraza, 05-09 Chevrolet Equinox, 05-09 Chevrolet Uplander, 05-10 Pontiac G6, 05-08 Pontiac Grand Prix, 05-09 Pontiac Montana, 05-07 Saturn Relay, 06-11 Buick Lucerne, 06-07 Buick Rendezvous, 06-11 Cadillac DTS, 06-09 Chevrolet Impala, 06-12 Chevrolet Malibu, 06-07 Chevrolet Monte Carlo, 06-09 Pontiac Torrent, 07-08 GMC Acadia, 07-09 Saturn Aura, 07-08 Saturn Outlook, 08 Buick Enclave, 08-10 Chevrolet Captiva Sport, 08-09 Pontiac G8, 08-10 Saturn Vue

Special Price $95.39 Regular Price $105.99
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Mass Airflow Sensor



  • Mass Airflow Sensor


ACD_Reman_SentenceRemanufactured - Not for sale where imports are restricted.
Connector GenderFemale
Connector Quantity1
Connector ShapeOval
FAQ - A1Yes, but with today's computerized engine systems, maintaining your vehicle's exhaust and emissions system is best left to a professional technician.
FAQ - A2Yes, how your engine breathes determines how well it runs, and ACDelco Mass Air Flow (MAF) Sensors measure the amount of air entering the engine to determine the most efficient air/fuel mixture for achieving clean burns.
FAQ - A3Yes, engine hesitation, stalling, decline in engine performance, excessive exhaust smoke, abnormal engine noises, noticeable fuel odors, or if the Check Engine Light illuminates are all signs that there may be a problem.
FAQ - Q1Can I replace an ACDelco Mass Air Flow (MAF) Sensor on my own?
FAQ - Q2Do ACDelco Mass Air Flow (MAF) Sensors help my vehicle's engine performance?
FAQ - Q3Will my vehicle alert me if there is a problem with engine air flow?
Good Maintenance Practices - S1 HWith today's computerized engine systems, maintaining your vehicle's exhaust and emissions system is best left to a professional technician.
Housing IncludedYES
Marketing Statement - Product LineWhether you need exact GM Original Equipment specification parts or high-quality replacement parts, you can rely on ACDelco Emission components, Fuel Injectors, and Control Modules to deliver. With our GM Original Equipment line and a select offering of Professional, premium aftermarket products, we keep your GM car, truck, or SUV running in tip-top form. Our portfolio includes: fuel injectors, control modules, mass air flow sensors, oxygen sensors, exhaust gas recirculation valves, manifold absolute pressure sensors, throttle position sensors, idle air control valves, and secondary air injection reaction components.
Marketing Statement - Sub BrandWhen your vehicle needs to run in tip-top form - to pass a state emissions test or to simply be environmentally conscious - you need ACDelco in your corner. Our Professional, premium aftermarket lineup of oxygen sensors, mass airflow sensors, and control modules will help your vehicle run as efficiently and cleanly as possible.
Mkt_State_Warranty_CA24 Months/40,000 KM (Parts Only). Please see for more details.
Mkt_State_Warranty_US24 Month / Unlimited Mile Limited Warranty (Parts Only). Please see for more details.
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Product DescriptionAn ACDelco Professional Remanufactured Mass Air Flow (MAF) Sensor is a high quality replacement for many vehicles on the road today. It is a key part of the engine management system. The MAF sensor measures the amount of air entering the engine so that the engine control module can determine the amount of fuel to inject. This ensures the most efficient air/fuel mixture for the best fuel economy and power, while reducing harmful exhaust emissions. Remanufacturing the mass air flow sensor is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. This mass air flow sensor will provide the same performance, durability, and service life you expect from ACDelco.
Programming RequiredNO
Signs of Wear & Troubleshooting - S1 B1Illumination of the Check Engine Light
Signs of Wear & Troubleshooting - S1 B2Improper engine idling, hesitation, or stalling
Signs of Wear & Troubleshooting - S1 B3Excessive exhaust smoke
Signs of Wear & Troubleshooting - S1 B4Abnormal engine noises
Signs of Wear & Troubleshooting - S1 B5Noticeable fuel odors
Signs of Wear & Troubleshooting - S1 HMake a service appointment if your vehicle shows any of the following symptoms:
Terminal Quantity5
Terminal TypeBlade



  • 2008-2010 Saturn Vue
  • 2005-2008 Pontiac Grand Prix
  • 2005-2009 Pontiac Montana
  • 2005-2009 Chevrolet Equinox
  • 2006-2011 Buick Lucerne
  • 2007-2009 Saturn Aura
  • 2007-2008 Saturn Outlook
  • 2006-2009 Pontiac Torrent
  • 2005-2009 Buick LaCrosse
  • 2006-2007 Chevrolet Monte Carlo
  • 2005-2007 Saturn Relay
  • 2006-2012 Chevrolet Malibu
  • 2008-2010 Chevrolet Captiva Sport
  • 2008-2008 Buick Enclave
  • 2007-2008 GMC Acadia
  • 2006-2011 Cadillac DTS
  • 2006-2007 Buick Rendezvous
  • 2005-2010 Pontiac G6
  • 2005-2009 Chevrolet Uplander
  • 2005-2007 Buick Terraza
  • 2006-2009 Chevrolet Impala
  • 2008-2009 Pontiac G8
  • 2005-2009 Buick Allure
Customer Questions
Does AC Delco make Ford parts?
No, AC Delco produces parts primarily for General Motors vehicles and does not make parts specifically for Ford vehicles.
Can I use AC Delco parts to replace OEM parts?
Yes, in most cases AC Delco parts can be used as a replacement for OEM parts. However, it's important to ensure that the parts are compatible with your specific make and model of vehicle.
What AC Delco oil filter do I need?
AC Delco offers a variety of oil filters that are compatible with different makes and models of vehicles. To determine which AC Delco oil filter you need, consult your vehicle's owner's manual or use our online filter lookup tool that matches the make, model, and year of your vehicle.
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