{"product_id":"denso-234-4391-oxygen-sensor","title":"Denso 234-4391 Oxygen Sensor - Downstream","description":"\u003ch2\u003eOverview of Denso OE Style Oxygen Sensor 234-4391\u003c\/h2\u003e\u003cp\u003eThe Denso OE Style Oxygen Sensor 234-4391 is designed specifically for Mazda 3 models, providing precise emissions control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a 14.17-inch wiring harness, ensuring a direct fit and reliable operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for accurate exhaust gas measurement\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Mazda 3 vehicles\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 0.708-inch thread diameter\u003c\/li\u003e\n\u003cli\u003eFour-wire design with female connector\u003c\/li\u003e\n\u003cli\u003e14.17-inch wiring harness length for proper installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Denso 234-4391 oxygen sensor is engineered to meet the exact specifications of Mazda 3 models, ensuring compatibility and optimal performance. As part of the OE Style product line, this sensor replicates the original equipment design, providing a seamless replacement without modifications. The heated sensor type allows for quicker activation and improved fuel efficiency by maintaining the sensor at operating temperature. Featuring a four-wire configuration and a female connector, it integrates smoothly with the vehicle’s existing wiring harness. The threaded mounting type with a 0.708-inch diameter ensures secure installation in the exhaust system.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHelps maintain proper air-fuel mixture for efficient combustion\u003c\/li\u003e\n\u003cli\u003eReduces harmful emissions by providing accurate oxygen level data\u003c\/li\u003e\n\u003cli\u003ePrevents engine performance issues related to faulty sensors\u003c\/li\u003e\n\u003cli\u003eAddresses check engine light triggers caused by oxygen sensor failure\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by enabling precise engine control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Denso 234-4391 oxygen sensor on a Mazda 3, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. The 14.17-inch wiring harness length provides flexibility during installation, but verify connector compatibility before securing. Thread the sensor carefully to prevent cross-threading and tighten to manufacturer torque specifications.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDenso’s OE Style oxygen sensors are manufactured to meet original equipment standards, ensuring durability and reliable performance. This part number 234-4391 undergoes rigorous testing to comply with emissions regulations and vehicle specifications. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":43976953725109,"sku":"BBNF-234-4391","price":99.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NP_2344391_Fro.jpg?v=1775007330","url":"https:\/\/www.partcatalog.com\/products\/denso-234-4391-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}