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Walker 245-1121 Mass Air Flow Sensor
Overview of Walker Mass Air Flow Sensor 245-1121
The Walker Mass Air Flow Sensor 245-1121 is designed to provide accurate airflow measurement for improved engine performance. Compatible with Chevrolet Prizm, Lexus GS430, Toyota Corolla, and Toyota SC430 models, this sensor ensures precise air intake data for optimal fuel management.
- Mounting hardware included for straightforward installation
- Five-terminal female connector for reliable electrical connection
- Housing not included, designed for direct replacement
- Compatible with select Chevrolet, Lexus, and Toyota vehicles
Walker Mass Air Flow Sensor Product Line Details
The Walker Mass Air Flow Sensor line focuses on delivering dependable emission control components that meet OEM specifications. This product line emphasizes accurate sensor readings and durable construction to maintain engine efficiency and emission standards. The 245-1121 sensor is part of this line, offering a precise fit and function for the specified vehicle models.
Product Features and Specifications
This mass air flow sensor features a five-terminal female connector, ensuring secure and consistent electrical connectivity. While the housing is not included, the sensor comes with mounting hardware to facilitate proper installation. The design supports accurate measurement of incoming air volume, which is critical for engine control units to adjust fuel injection and maintain emission compliance.
Common Applications and Issues Addressed
- Restores accurate air flow measurement for Chevrolet Prizm and Toyota Corolla engines
- Helps resolve engine hesitation and rough idling in Lexus GS430 and Toyota SC430
- Addresses check engine light triggers related to mass air flow sensor faults
- Improves fuel efficiency by providing precise air intake data
- Supports emission control by ensuring proper air-fuel mixture
Installation Notes and Tips
Installation of the Walker 245-1121 sensor requires removal of the old sensor and securing the new unit using the included mounting hardware. Ensure the five-terminal female connector is properly aligned and connected to avoid electrical issues. Since the housing is not included, reuse the existing housing or verify compatibility with the vehicle’s intake system.
Quality Assurance and Warranty
Walker products are manufactured to meet industry standards for emission control sensors. The 245-1121 sensor undergoes quality checks to ensure reliable performance. Please refer to Walker’s official documentation for specific warranty details related to this mass air flow sensor.
| Brand | Walker |
| Part Number | 245-1121 |
| Position | Walker Mass Air Flow Sensor |
| Connector Gender | Female |
| Housing Included | No |
| Mounting Hardware Included | Yes |
| Terminal Quantity | 5 |
This part fits 21 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2009 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2008 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2007 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2006 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2005 | Lexus | GS430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2005 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2004 | Lexus | GS430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2004 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2003 | Lexus | GS430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2003 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2002 | Chevrolet | Prizm | 1.8L | L4 | N/A | Walker Mass Air Flow Sensor |
| 2002 | Lexus | GS430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2002 | Lexus | SC430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2002 | Toyota | Corolla | 1.8L | L4 | N/A | Walker Mass Air Flow Sensor |
| 2001 | Chevrolet | Prizm | 1.8L | L4 | N/A | Walker Mass Air Flow Sensor |
| 2001 | Lexus | GS430 | 4.3L | V8 | N/A | Walker Mass Air Flow Sensor |
| 2001 | Toyota | Corolla | 1.8L | L4 | N/A | Walker Mass Air Flow Sensor |
| 2000 | Chevrolet | Prizm | 1.8L | L4 | N/A | Walker Mass Air Flow Sensor |
| 2000 | Toyota | Corolla | 1.8L | L4 | N/A | Walker Mass Air Flow Sensor |
| 1999 | Toyota | Corolla | 1.8L | L4 | N/A | Sensor Only |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.