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Standard Ignition MAS0251 Mass Air Flow Sensor
| Brand | Standard Ignition MAS0251 |
|---|---|
| Attachment Method | Bolt On |
| Connector Gender | Female |
| Connector Shape | Oval |
| Housing Included | No |
| Material | Plastic |
| Notes | Complete Assembly |
| Number of Bolt Holes | 2 |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Fits | Saturn and Cadillac · 8 vehicles |
100% new. Never remanufactured, so there’s no leftover debris to cause sensor failure.
Computer-tested. Ensures accurate airflow readings under hard engine conditions.
Bolt-on installation. Complete assembly with a plastic housing and oval connector.
Cross-references Cardone Reman 74-10090, Delphi AF10161 and Spectra Premium MA368 for the same application. See all 13.
Mass Air Flow Sensor for Saturn Vue and Cadillac CTS
Standard Ignition MAS0251 is a complete mass air flow sensor assembly built for accurate airflow measurement in select Saturn Vue and Cadillac CTS applications. It uses a bolt-on design with a female oval connector and 5 blade terminals to support reliable ECU airflow input across changing engine loads and ambient temperatures.
Key Features
- 100% new, never remanufactured construction
- Computer-tested for accurate airflow readings under hard engine conditions
- Proprietary sensing elements for stable output across a wide temperature range
- Bolt-on attachment method with 2 bolt holes
- Plastic housing design with complete assembly configuration
- Female oval connector, 1 connector, 5 male blade terminals
Detailed Description
The Standard Ignition MAS0251 mass air flow sensor helps the engine control unit measure incoming air so it can balance fuel delivery and maintain the correct air/fuel ratio. This matters for drivability, emissions performance, and consistent engine response in vehicles such as the 2002-2006 Saturn Vue and 2003-2005 Cadillac CTS. The MAS0251 is manufactured as a new unit rather than remanufactured, reducing the risk of leftover debris affecting sensor operation.
This part cross-references Delphi AF10161 for the same application.
What It Helps Solve
- Rough idle caused by inaccurate airflow readings
- Hesitation or stumble during acceleration
- Check engine light concerns related to airflow sensor performance
- Poor fuel control from incorrect air/fuel ratio input
- Driveability issues tied to unstable sensor output
Installation Notes and Tips
Verify connector shape, terminal count, and bolt-on mounting before installation. The MAS0251 uses a female oval connector with 5 male blade terminals and 2 bolt holes, so matching the electrical and mounting interface is important for proper fitment. Confirm the vehicle application by year and model before replacing the sensor.
Compatible With 2002-2006 Saturn Vue and 2003-2005 Cadillac CTS. Fits 2002-2006 Saturn Vue, N/A. Fits 2003-2005 Cadillac CTS, N/A.
Quality Assurance
Standard Ignition manufactures this sensor to strict quality standards and computer-tests each unit to help ensure accurate airflow output to the ECU. The design is intended to deliver consistent performance in aftermarket service applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Saturn | Vue | — | — | N/A | — |
| 2005 | Cadillac | CTS | 3.6L | V6 | N/A | — |
| 2005 | Saturn | Vue | — | — | N/A | — |
| 2004 | Cadillac | CTS | 3.6L | V6 | N/A | — |
| 2004 | Saturn | Vue | — | — | N/A | — |
| 2003 | Cadillac | CTS | — | — | N/A | — |
| 2003 | Saturn | Vue | — | — | N/A | — |
| 2002 | Saturn | Vue | — | — | N/A | — |
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