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Walker 245-1598 Mass Air Flow Sensor
| Brand | Walker 245-1598 |
|---|---|
| Color | Black |
| Housing Included | No |
| Terminal Type | Pin |
| Mounting Hardware Included | No |
| Connector Quantity | 1 |
| Connector Shape | Oblong |
| Mounting Hole Quantity | 2 |
| Terminal Quantity | 5 |
| Connector Gender | Male |
| Product line | Sensor Only |
| Fits | Toyota · 5 vehicles |
Sensor only replacement. Faster and more economical than a complete housing assembly.
100% new. Never remanufactured, with fit, form, and function tested before sale.
Custom tuned flow characteristics. Engineered for the full flow spectrum and verified with production testing.
Cross-references 197-4006180, 31342521 and 2220430020 for the same application. See all 4.
Walker 245-1598 Mass Air Flow Sensor
Walker 245-1598 is a sensor-only mass air flow sensor for the 2016-2020 Toyota Mirai. It is a black, 5-terminal unit with one oblong male connector and a 2-hole mounting pattern, built for direct replacement service where the housing is reused.
Walker Products designs and tests its MAF sensors for fit, form, and function before release. This Sensor Only line is focused on faster service and a more economical repair path, while still using programmed, tested electronics and OEM-quality components.
Key Features
- Sensor-only design; housing not included
- Fits 2016-2020 Toyota Mirai applications
- Black finish with one oblong connector
- 5-terminal, male connector configuration
- 2 mounting holes for OE-style installation
- Programmed and production-tested before sale
- Built by Walker Products, part number 245-1598
Detailed Description
The Walker Sensor Only program is designed for drivers and technicians who need a replacement mass air flow sensor without replacing the full housing assembly. Part number 245-1598 is engineered for the Toyota Mirai and is calibrated to deliver the airflow signal the engine management system expects. Walker states that many of its high-demand MAF sensors are manufactured in the USA using OEM-quality components and custom circuit board programming.
This part cross-references Denso DMA-0106 for the same application. If you are searching for a Toyota Mirai mass air flow sensor replacement, Walker 245-1598 provides a direct sensor-only option for 2016, 2017, 2018, 2019, and 2020 model years.
What It Helps Address
- Check engine light related to mass air flow sensor performance
- Rough idle caused by incorrect airflow readings
- Hesitation or poor throttle response
- Fuel trim issues from inaccurate air metering
- Driveability problems tied to a failing MAF sensor
Installation Notes
Install the sensor into a clean intake path and inspect the connector, air tubes, and sealing surfaces before assembly. Because this is a sensor-only replacement, reuse of the existing housing makes cleanliness important. Avoid touching the sensing element with bare hands and verify the connector locks fully into place.
Quality Assurance
Walker Products has supplied fuel system components since 1946 and is an ISO 9001 and IATF 16949 certified manufacturer. According to Walker, each MAF sensor is programmed, tested, and verified for fit, form, and function before release, with on-vehicle validation used to confirm calibration.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 2020 | Toyota | Mirai | -L | -- | Sensor Only |
| 2019 | Toyota | Mirai | -L | -- | Sensor Only |
| 2018 | Toyota | Mirai | -L | -- | Sensor Only |
| 2017 | Toyota | Mirai | -L | -- | Sensor Only |
| 2016 | Toyota | Mirai | -L | -- | Sensor Only |
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