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Part #: 245-1121

Walker 245-1121 Mass Air Flow Sensor

Walker Mass Air Flow Sensor
⚙️ 21 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Mass Air Flow Sensor
🚗Fitment: Lexus, Chevrolet, and Toyota, SC430, GS430, Prizm, and Corolla
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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.

BrandWalker
Part Number245-1121
PositionWalker Mass Air Flow Sensor
Connector GenderFemale
Housing IncludedNo
Mounting Hardware IncludedYes
Terminal Quantity5

This part fits 21 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2009LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2008LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2007LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2006LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2005LexusGS4304.3LV8N/AWalker Mass Air Flow Sensor
2005LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2004LexusGS4304.3LV8N/AWalker Mass Air Flow Sensor
2004LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2003LexusGS4304.3LV8N/AWalker Mass Air Flow Sensor
2003LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2002ChevroletPrizm1.8LL4N/AWalker Mass Air Flow Sensor
2002LexusGS4304.3LV8N/AWalker Mass Air Flow Sensor
2002LexusSC4304.3LV8N/AWalker Mass Air Flow Sensor
2002ToyotaCorolla1.8LL4N/AWalker Mass Air Flow Sensor
2001ChevroletPrizm1.8LL4N/AWalker Mass Air Flow Sensor
2001LexusGS4304.3LV8N/AWalker Mass Air Flow Sensor
2001ToyotaCorolla1.8LL4N/AWalker Mass Air Flow Sensor
2000ChevroletPrizm1.8LL4N/AWalker Mass Air Flow Sensor
2000ToyotaCorolla1.8LL4N/AWalker Mass Air Flow Sensor
1999ToyotaCorolla1.8LL4N/ASensor 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:

1581130197607021334252134271222040D010222041501024234M4M10485S26446415157283421607450010840938865001091781794859375AF10137MA170MAS0190MF4234MF4234NSU1354

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