{"product_id":"denso-234-3091-oxygen-sensor","title":"Denso 234-3091 Oxygen Sensor - Upstream","description":"\u003ch2\u003eOverview of Denso OE Style Oxygen Sensor 234-3091\u003c\/h2\u003e\u003cp\u003eThe Denso OE Style Oxygen Sensor 234-3091 is designed specifically for Subaru vehicles, including the Forester, Impreza, and Legacy models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated sensor type for faster activation and improved efficiency\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Subaru Forester, Impreza, and Legacy models\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 0.708-inch thread diameter\u003c\/li\u003e\n\u003cli\u003eFemale connector with 3-wire configuration\u003c\/li\u003e\n\u003cli\u003eWiring harness length of 17.32 inches for precise installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Denso 234-3091 oxygen sensor is engineered to meet the exact specifications of Subaru vehicles, providing reliable emissions feedback to the engine control unit. Featuring a heated sensor element, it reaches operating temperature quickly, which helps reduce cold start emissions and improves fuel efficiency. The sensor’s 3-wire design and female connector ensure compatibility with the vehicle’s wiring harness, while the 0.708-inch threaded mounting type allows for secure installation. With a wiring harness length of 17.32 inches, this sensor fits precisely without excess slack or tension.\u003c\/p\u003e\u003cp\u003eThis oxygen sensor is part of Denso's OE Style product line, which focuses on delivering original equipment quality and fitment. The OE Style line is designed to replicate the performance and durability of factory-installed parts, making it a suitable replacement for maintaining Subaru vehicle emissions systems.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHelps maintain proper air-fuel mixture for Subaru Forester, Impreza, and Legacy\u003c\/li\u003e\n\u003cli\u003eReduces engine misfires and rough idling caused by faulty oxygen sensors\u003c\/li\u003e\n\u003cli\u003ePrevents increased emissions and failed emissions tests\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by providing accurate exhaust gas readings\u003c\/li\u003e\n\u003cli\u003eResolves check engine light triggers related to oxygen sensor faults\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure vehicle compatibility with Subaru Forester, Impreza, or Legacy before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the 0.708-inch threaded mounting\u003c\/li\u003e\n\u003cli\u003eVerify the female connector matches the vehicle’s wiring harness\u003c\/li\u003e\n\u003cli\u003eHandle the sensor carefully to avoid contamination of the sensing element\u003c\/li\u003e\n\u003cli\u003eFollow vehicle manufacturer torque specifications during installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDenso OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 234-3091 part number undergoes rigorous testing to comply with emissions regulations and OEM specifications. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.\u003c\/p\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":43976626831541,"sku":"BBNF-234-3091","price":60.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NP_2343091_Fro.jpg?v=1775007231","url":"https:\/\/www.partcatalog.com\/products\/denso-234-3091-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}