Keep your Mazda or Toyota metering incoming air accurately with the Standard Ignition Mass Air Flow Sensor (MAS0517). A mass air flow sensor measures the air entering the engine so the ECU can deliver the correct air/fuel ratio; if a faulty MAF sensor is the cause of rough idle, hesitation, stalling, or poor fuel economy, this replaces it. It drops in as a direct-fit replacement for the listed applications, including the 2018-2024 Mazda CX-5 [L4-2.5L], the 2019-2025 Mazda 3 [L4-2.5L], and the 2019-2020 Toyota Yaris [L4-1.5L].
- 100% computer-tested: each sensor is tested so the ECU receives accurate airflow readings under hard engine conditions.
- 100% new, never remanufactured: no leftover debris that can cause sensor failure.
- Proprietary sensing elements: deliver accurate airflow output to the ECU over a wide range of ambient temperatures.
- Built to strict quality standards.
This is a sensor-only unit — the housing is not included, so transfer or reuse your original housing as directed by the service procedure. It bolts on through two bolt holes and connects via a single oval plug-in connector with three male pin terminals. Country of origin: Japan. Manufacturer part number MAS0517.
Fitment: 2018-2021 Mazda 6 [L4-2.5L]; 2018 Mazda CX-5 [L4-2.0L]; 2018-2024 Mazda CX-5 [L4-2.5L]; 2019-2025 Mazda 3 [L4-2.5L]; 2019-2021 Mazda CX-3 [L4-2.0L]; 2019-2024 Mazda MX-5 Miata [L4-2.0L]; 2019-2020 Toyota Yaris [L4-1.5L]; 2020-2024 Mazda CX-30 [L4-2.5L]; 2021-2022 Mazda 3 [L4-2.0L]; 2023 Mazda CX-50 [L4-2.5L]. See the Buyer's Guide tab to confirm your year and engine.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this mass air flow sensor do?
It measures the mass of air entering the engine so the ECU can meter the correct air/fuel ratio. If a failed MAF sensor is behind your driveability issue, MAS0517 replaces it.
Does the MAS0517 fit my vehicle?
It's a direct-fit replacement for the listed applications, including the Mazda 3, 6, CX-3, CX-30, CX-5, CX-50, MX-5 Miata and the Toyota Yaris. Check the Buyer's Guide tab to confirm your year and engine.
Is the housing included?
No. Per the catalog it's a sensor-only unit and the housing is not included; transfer or reuse your original housing as directed by the service procedure.
Is this sensor new or remanufactured?
It's 100% new and never remanufactured, so there's no leftover debris that could cause sensor failure.
What are the signs a MAF sensor may need replacing?
Common signs include rough idle, hesitation, stalling, or poor fuel economy. Diagnose the cause before replacing, since these symptoms can have other sources.
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