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Standard Ignition MAS0203 Mass Air Flow SensorOE Quality 60-Day Returns
Part #: MAS0203

Standard Ignition MAS0203 Mass Air Flow Sensor

223 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, GMC, Hummer, Saab, Buick, Cadillac, Isuzu, Pontiac, and Oldsmobile, Trailblazer, Envoy, H2, 9-7x, Rainier, Corvette, Silverado 1500 Classic, Silverado 1500 HD Classic, Silverado 3500, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD Classic, Escalade, Escalade ESV, Escalade EXT, Avalanche 1500, Avalanche 2500, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Suburban 1500, Suburban 2500, Tahoe, Trailblazer EXT, Envoy XL, Sierra 1500 HD, Sierra 2500 HD, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500, Ascender, GTO, CTS, DeVille, Envoy XUV, Bonneville, Seville, Sierra 2500, Aurora, and Eldorado
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Not what you need? See all Mass Air Flow Sensor options

Reliable Mass Air Flow Sensor for GM and Saab Vehicles

The Standard Ignition MAS0203 Mass Air Flow Sensor is designed to provide accurate airflow measurement for a range of GM and Saab models. This bolt-on sensor features a complete assembly with durable metal and plastic housing, ensuring consistent performance and easy installation.

  • Bolt-on attachment method with 3 bolt holes for secure fitment
  • Female oval connector with one connector for straightforward wiring
  • Includes housing made of metal and plastic for durability
  • Five male blade terminals for reliable electrical connection
  • Complete assembly ready for direct replacement

Durable Construction and Precise Design

The MAS0203 Mass Air Flow Sensor from Standard Ignition is engineered with a metal and plastic housing that protects sensitive components from environmental damage. Its oval-shaped female connector and five male blade terminals ensure a secure and stable electrical connection. The sensor mounts easily using three bolt holes, making it compatible with various GM and Saab vehicles including Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, and Saab models such as the Chevrolet Silverado 1500, Cadillac Escalade, GMC Sierra 2500, and Saab 9-7x.

Compatible Vehicles and Applications

This mass air flow sensor is compatible with a wide range of vehicles, including:

  • Buick Bonneville
  • Cadillac CTS, DeVille, Eldorado, Escalade, Seville
  • Chevrolet Avalanche 1500/2500, Corvette, Silverado 1500/2500/3500, Suburban 1500/2500, Tahoe, Trailblazer
  • GMC Sierra 1500/2500/3500, Envoy, Yukon XL 1500/2500
  • Hummer H2
  • Isuzu Ascender, Rainier
  • Oldsmobile Aurora
  • Pontiac GTO
  • Saab 9-7x

Common Issues Addressed by the MAS0203 Sensor

  • Engine performance problems due to inaccurate airflow readings
  • Check engine light triggered by faulty mass air flow sensor
  • Poor fuel economy caused by incorrect air-fuel mixture
  • Rough idling or stalling during acceleration
  • Failed emissions tests related to sensor malfunction

Installation Notes and Tips

The Standard Ignition MAS0203 sensor is designed for bolt-on installation using the existing three bolt holes. Ensure the female oval connector aligns properly with the vehicle’s wiring harness. Handle the sensor carefully to avoid damage to the blade terminals. It is recommended to disconnect the battery before installation to prevent electrical shorts. Verify all connections are secure and free of corrosion before completing the installation.

Quality Assurance and Warranty

Standard Ignition provides this mass air flow sensor as a complete assembly built to meet or exceed OEM specifications. The combination of metal and plastic materials ensures durability and long service life. While specific warranty details may vary, Standard Ignition products typically come with a limited warranty covering defects in materials and workmanship.

BrandStandard Ignition
Part NumberMAS0203
Attachment MethodBolt On
Connector GenderFemale
Connector ShapeOval
Housing IncludedYes
MaterialMetal, Plastic
NotesComplete Assembly
Number of Bolt Holes3
Terminal GenderMale
Terminal TypeBlade

This part fits 223 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2009ChevroletTrailblazer6.0LV8N/A
2009GMCEnvoy5.3LV8N/A
2009HummerH2N/A
2008ChevroletTrailblazer6.0LV8N/A
2008ChevroletTrailblazer5.3LV8N/A
2008GMCEnvoy5.3LV8N/A
2008HummerH2N/A
2008Saab9-7x6.0LV8N/A
2008Saab9-7x5.3LV8N/A
2007BuickRainier5.3LV8N/A
2007ChevroletCorvette6.0LV8N/A
2007ChevroletSilverado 1500 ClassicN/A
2007ChevroletSilverado 1500 HD ClassicN/A
2007ChevroletSilverado 3500N/A
2007ChevroletTrailblazer5.3LV8N/A
2007ChevroletTrailblazer6.0LV8N/A
2007GMCEnvoy5.3LV8N/A
2007GMCSierra 15005.3LV8N/A
2007GMCSierra 1500 ClassicN/A
2007GMCSierra 1500 HD ClassicN/A
2007HummerH2N/A
2007Saab9-7x5.3LV8N/A
2006BuickRainier5.3LV8N/A
2006CadillacEscaladeN/A
2006CadillacEscalade ESVN/A
2006CadillacEscalade EXTN/A
2006ChevroletAvalanche 1500N/AInstrument Panel Dimmer Switch Complete Assembly
2006ChevroletAvalanche 2500N/AInstrument Panel Dimmer Switch Complete Assembly
2006ChevroletCorvette6.0LV8N/A
2006ChevroletSilverado 1500N/A
2006ChevroletSilverado 1500 HDN/A
2006ChevroletSilverado 25005.3LV8N/A
2006ChevroletSilverado 2500 HDGASN/A
2006ChevroletSilverado 3500GASN/A
2006ChevroletSuburban 1500N/A
2006ChevroletSuburban 2500N/A
2006ChevroletTahoeN/A
2006ChevroletTrailblazer5.3LV8N/A
2006ChevroletTrailblazer6.0LV8N/A
2006ChevroletTrailblazer EXT5.3LV8N/A
2006GMCEnvoy5.3LV8N/A
2006GMCEnvoy XL5.3LV8N/A
2006GMCSierra 1500N/A
2006GMCSierra 1500 HDN/A
2006GMCSierra 2500 HDGASN/A
2006GMCSierra 3500GASN/A
2006GMCYukonN/A
2006GMCYukon XL 1500N/A
2006GMCYukon XL 2500N/A
2006HummerH2N/A
2006IsuzuAscenderN/A
2006PontiacGTON/A
2006Saab9-7x5.3LV8N/A
2005BuickRainier5.3LV8N/A
2005CadillacCTS5.7LV8N/A
2005CadillacDeVilleN/A
2005CadillacEscaladeN/A
2005CadillacEscalade ESVN/A
2005CadillacEscalade EXTN/A
2005ChevroletAvalanche 1500N/AInstrument Panel Dimmer Switch Complete Assembly
2005ChevroletAvalanche 2500N/AInstrument Panel Dimmer Switch Complete Assembly
2005ChevroletCorvetteN/A
2005ChevroletSilverado 1500N/A
2005ChevroletSilverado 1500 HDN/A
2005ChevroletSilverado 25005.3LV8N/A
2005ChevroletSilverado 2500 HDGASN/A
2005ChevroletSilverado 3500CNGN/A
2005ChevroletSilverado 3500GASN/A
2005ChevroletSuburban 1500N/A
2005ChevroletSuburban 2500N/A
2005ChevroletTahoeN/A
2005ChevroletTrailblazer EXT5.3LV8N/A
2005GMCEnvoy5.3LV8N/A
2005GMCEnvoy XL5.3LV8N/A
2005GMCEnvoy XUV5.3LV8N/A
2005GMCSierra 1500N/A
2005GMCSierra 1500 HDN/A
2005GMCSierra 2500 HDGASN/A
2005GMCSierra 2500 HDCNGN/A
2005GMCSierra 3500GASN/A
2005GMCSierra 3500CNGN/A
2005GMCYukonN/A
2005GMCYukon XL 1500N/A
2005GMCYukon XL 2500N/A
2005HummerH2N/A
2005IsuzuAscenderN/A
2005PontiacBonneville4.6LV8N/A
2005PontiacGTON/A
2005Saab9-7x5.3LV8N/A
2004BuickRainier5.3LV8N/A
2004CadillacCTS5.7LV8N/A
2004CadillacDeVilleN/A
2004CadillacEscaladeN/A
2004CadillacEscalade ESVN/A
2004CadillacEscalade EXTN/A
2004CadillacSevilleN/A
2004ChevroletAvalanche 1500N/AInstrument Panel Dimmer Switch Complete Assembly
2004ChevroletAvalanche 2500N/AInstrument Panel Dimmer Switch Complete Assembly
2004ChevroletCorvette5.7LV8N/A
2004ChevroletSilverado 1500N/A
2004ChevroletSilverado 2500GASN/A
2004ChevroletSilverado 2500 HDGASN/A
2004ChevroletSilverado 3500GASN/A
2004ChevroletSilverado 3500CNGN/A
2004ChevroletSuburban 1500N/A
2004ChevroletSuburban 2500N/A
2004ChevroletTahoeN/A
2004ChevroletTrailblazer EXT5.3LV8N/A
2004GMCEnvoy XL5.3LV8N/A
2004GMCEnvoy XUV5.3LV8N/A
2004GMCSierra 1500N/A
2004GMCSierra 2500N/A
2004GMCSierra 2500 HDGASN/A
2004GMCSierra 2500 HDCNGN/A
2004GMCSierra 3500GASN/A
2004GMCSierra 3500CNGN/A
2004GMCYukonN/A
2004GMCYukon XL 1500N/A
2004GMCYukon XL 2500N/A
2004HummerH2N/A
2004IsuzuAscenderN/A
2004PontiacBonneville4.6LV8N/A
2003CadillacDeVilleN/A
2003CadillacEscaladeN/AInstrument Panel Dimmer Switch Complete Assembly
2003CadillacEscalade ESVN/AInstrument Panel Dimmer Switch Complete Assembly
2003CadillacEscalade EXTN/AInstrument Panel Dimmer Switch Complete Assembly
2003CadillacSevilleN/A
2003ChevroletAvalanche 1500N/AInstrument Panel Dimmer Switch Complete Assembly
2003ChevroletAvalanche 2500N/AInstrument Panel Dimmer Switch Complete Assembly
2003ChevroletCorvette5.7LV8N/A
2003ChevroletSilverado 1500N/A
2003ChevroletSilverado 1500 HDN/A
2003ChevroletSilverado 2500GASN/A
2003ChevroletSilverado 2500 HDGASN/A
2003ChevroletSilverado 3500GASN/A
2003ChevroletSilverado 3500CNGN/A
2003ChevroletSuburban 1500N/A
2003ChevroletSuburban 2500N/A
2003ChevroletTahoeN/A
2003ChevroletTrailblazer EXT5.3LV8N/A
2003GMCEnvoy XL5.3LV8N/A
2003GMCSierra 1500N/A
2003GMCSierra 1500 HDN/A
2003GMCSierra 2500N/A
2003GMCSierra 2500 HDGASN/A
2003GMCSierra 2500 HDCNGN/A
2003GMCSierra 3500GASN/A
2003GMCSierra 3500CNGN/A
2003GMCYukonN/A
2003GMCYukon XL 1500N/A
2003GMCYukon XL 2500N/A
2003HummerH2N/A
2003IsuzuAscenderN/A
2003OldsmobileAurora4.0LV8N/A
2002CadillacDeVilleN/A
2002CadillacEldoradoN/A
2002CadillacEscaladeN/A
2002CadillacEscalade EXTN/AInstrument Panel Dimmer Switch Complete Assembly
2002CadillacSevilleN/A
2002ChevroletAvalanche 1500N/AInstrument Panel Dimmer Switch Complete Assembly
2002ChevroletAvalanche 2500N/AInstrument Panel Dimmer Switch Complete Assembly
2002ChevroletCorvette5.7LV8N/A
2002ChevroletSilverado 1500N/A
2002ChevroletSilverado 1500 HDN/A
2002ChevroletSilverado 2500GASN/A
2002ChevroletSilverado 2500 HDBI-FUELN/A
2002ChevroletSilverado 2500 HDCNGN/A
2002ChevroletSilverado 2500 HDGASN/A
2002ChevroletSilverado 3500GASN/A
2002ChevroletSuburban 1500N/A
2002ChevroletSuburban 2500N/A
2002ChevroletTahoeN/A
2002GMCSierra 1500N/A
2002GMCSierra 1500 HDN/A
2002GMCSierra 2500N/A
2002GMCSierra 2500 HDGASN/A
2002GMCSierra 2500 HDCNGN/A
2002GMCSierra 2500 HDBI-FUELN/A
2002GMCSierra 3500GASN/A
2002GMCYukonN/A
2002GMCYukon XL 1500N/A
2002GMCYukon XL 2500N/A
2002OldsmobileAurora4.0LV8N/A
2001CadillacDeVilleN/A
2001CadillacEldoradoN/A
2001CadillacSevilleN/A
2001ChevroletC1500N/A
2001ChevroletCorvetteN/A
2001ChevroletSilverado 1500N/A
2001ChevroletSilverado 1500 HDN/A
2001ChevroletSilverado 2500N/A
2001ChevroletSilverado 2500 HDGASN/A
2001ChevroletSilverado 3500GASN/A
2001ChevroletSuburban 1500N/A
2001ChevroletSuburban 2500N/A
2001ChevroletTahoeN/A
2001GMCSierra 1500N/A
2001GMCSierra 1500 HDN/A
2001GMCSierra 2500N/A
2001GMCSierra 2500 HDGASN/A
2001GMCSierra 3500GASN/A
2001GMCYukonN/A
2001GMCYukon XL 1500N/A
2001GMCYukon XL 2500N/A
2001OldsmobileAurora4.0LV8N/A
2000CadillacDeVilleN/A
2000CadillacEldoradoN/A
2000CadillacSevilleN/A
2000ChevroletSilverado 1500N/A
2000ChevroletSilverado 2500N/A
2000ChevroletSuburban 1500N/A
2000ChevroletSuburban 2500N/A
2000ChevroletTahoeN/A
2000GMCSierra 1500N/A
2000GMCSierra 2500N/A
2000GMCYukon4.8LV8N/A
2000GMCYukon5.3LV8N/A
2000GMCYukon XL 1500N/A
2000GMCYukon XL 2500N/A
1999ChevroletSilverado 1500N/A
1999ChevroletSilverado 2500N/A
1999GMCSierra 1500N/A
1999GMCSierra 2500N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

158-1465159040682-14130213-3460245-11073MF1034M-10465S263664-151074-84118159040680917-826AF10043DL-6012MA1062MA145MF8411MQ7202XTP48411

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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