{"product_id":"motorad-3mf139-mass-air-flow-sensor","title":"Motorad 3MF139 Mass Air Flow Sensor","description":"\u003ch2\u003eMass Air Flow Sensor for Kia Rio\u003c\/h2\u003e\u003cp\u003eThe MotoRad 3MF139 mass air flow sensor measures incoming air and sends that data to the ECU for fuel control. Built for 2001-2005 Kia Rio applications, this sensor is designed for stable signal output, contamination resistance, and vibration durability in everyday engine management service.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit mass air flow sensor for 2001-2005 Kia Rio\u003c\/li\u003e\n\u003cli\u003eMeasures intake airflow for ECU fuel calculation\u003c\/li\u003e\n\u003cli\u003eBlade terminals with 3-wire, 1-connector design\u003c\/li\u003e\n\u003cli\u003eFemale H-style connector with male terminals\u003c\/li\u003e\n\u003cli\u003eEngineered to reduce contamination and handle vibration\u003c\/li\u003e\n\u003cli\u003eManufactured to meet or exceed OEM specifications\u003c\/li\u003e\n\u003cli\u003ePart number: 3MF139\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eMotoRad 3MF139 is a replacement mass air flow sensor for the Kia Rio, 2001-2005. It is built to provide accurate airflow measurement so the engine control unit can manage air-fuel delivery with the correct input. The sensor uses a 3-wire layout, blade terminals, and a single female H-shaped connector for the specified application. MotoRad manufactures this part in IATF 16949 facilities and backs the engine management line with a limited lifetime warranty. Cross-reference part numbers for this application include 0K32A13210 and 917856.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Part May Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRough idle caused by inaccurate airflow readings\u003c\/li\u003e\n\u003cli\u003eHesitation or poor throttle response on a Kia Rio\u003c\/li\u003e\n\u003cli\u003eCheck engine light related to mass air flow sensor performance\u003c\/li\u003e\n\u003cli\u003eFuel mixture problems from incorrect ECU air data\u003c\/li\u003e\n\u003cli\u003eDriveability concerns tied to contamination or vibration-related sensor wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify connector shape, terminal count, and wire quantity before installation. Inspect the intake tract, air filter housing, and wiring connector for contamination or damage before replacing the sensor. Confirm the vehicle is a 2001-2005 Kia Rio and match the original sensor configuration to the 3MF139 before final installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eMotoRad designs this mass air flow sensor to meet or exceed OEM specifications and produces it in IATF 16949 manufacturing facilities. The engine management product line includes a limited lifetime warranty.\u003c\/p\u003e","brand":"Motorad","offers":[{"title":"Default Title","offer_id":52876607029429,"sku":"BFNG-3MF139","price":145.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/TZ_3MF139_Fro.jpg?v=1785304067","url":"https:\/\/www.partcatalog.com\/products\/motorad-3mf139-mass-air-flow-sensor","provider":"PartCatalog","version":"1.0","type":"link"}