{"product_id":"standard-ignition-mas0409-mass-air-flow-sensor","title":"Standard Ignition MAS0409 Mass Air Flow Sensor","description":"\u003ch2\u003eReliable Mass Air Flow Sensor for Audi and Volkswagen Vehicles\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition MAS0409 Mass Air Flow Sensor is designed to provide accurate airflow measurement for improved engine performance. Compatible with select Audi and Volkswagen models, this sensor helps maintain optimal air-fuel mixture for efficient combustion.\u003c\/p\u003e\u003ch2\u003eKey Features of Standard Ignition MAS0409\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrecision-engineered for accurate airflow measurement\u003c\/li\u003e\n\u003cli\u003eCompatible with Audi A4, A4 Quattro, and Volkswagen Beetle, Golf, Jetta, Passat, TT\u003c\/li\u003e\n\u003cli\u003eDirect replacement part number MAS0409 for easy identification\u003c\/li\u003e\n\u003cli\u003eDurable construction to withstand engine environment\u003c\/li\u003e\n\u003cli\u003eEnsures proper engine management system operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition MAS0409 Mass Air Flow Sensor is an essential component in the emission control system, responsible for measuring the volume and density of air entering the engine. This data is critical for the engine control unit (ECU) to calculate the correct amount of fuel for combustion. Designed specifically for Audi and Volkswagen models such as the A4, A4 Quattro, Beetle, Golf, Jetta, Passat, and TT, this sensor meets OEM specifications to ensure compatibility and reliable performance. The part number MAS0409 identifies this sensor as a direct fit replacement, simplifying maintenance and repair tasks.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores accurate air-fuel ratio for improved engine efficiency\u003c\/li\u003e\n\u003cli\u003eResolves rough idling and engine hesitation problems\u003c\/li\u003e\n\u003cli\u003eEliminates check engine light triggers related to airflow sensor faults\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by providing precise airflow data\u003c\/li\u003e\n\u003cli\u003eHelps reduce emissions by maintaining proper combustion\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the engine is cool before installation to avoid injury\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery to prevent electrical shorts during replacement\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old sensor and avoid damaging the air intake system\u003c\/li\u003e\n\u003cli\u003eInstall the MAS0409 sensor securely and reconnect all electrical connectors\u003c\/li\u003e\n\u003cli\u003eClear any diagnostic trouble codes after installation to reset the ECU\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eStandard Ignition parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The MAS0409 Mass Air Flow Sensor undergoes rigorous quality control testing to maintain consistent functionality. Warranty coverage details are provided by Standard Ignition and typically include protection against defects in materials and workmanship for a specified period.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":44691111772341,"sku":"FBHK-MAS0409","price":124.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_MAS0409_Fro.jpg?v=1775081271","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-mas0409-mass-air-flow-sensor","provider":"PartCatalog","version":"1.0","type":"link"}