{"product_id":"ntk-25581-oxygen-sensor","title":"NTK 25581 Oxygen Sensor","description":"\u003ch2\u003eOverview of NTK Direct Fit Oxygen Sensor 25581\u003c\/h2\u003e\u003cp\u003eThe NTK Direct Fit Oxygen Sensor 25581 is designed for precise emission control in select Porsche, Saab, and Volvo vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to maintain optimal engine performance and reduce emissions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated sensor type for faster response times\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Porsche 911, Saab 9-3 and 9-5, Volvo 850, 900, C70, S70, and V70 models\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18mm thread diameter\u003c\/li\u003e\n\u003cli\u003e29.25-inch wiring harness length with 4 wires for reliable connectivity\u003c\/li\u003e\n\u003cli\u003ePart number 25581 for easy identification and replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetails on the Direct Fit Oxygen Sensor Product Line\u003c\/h2\u003e\u003cp\u003eThe NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors tailored to specific vehicle applications. This ensures compatibility and simplifies installation without the need for modifications. The 25581 sensor maintains the integrity of the original equipment by matching OEM specifications for fit and function.\u003c\/p\u003e\u003ch2\u003eTechnical Description and Features\u003c\/h2\u003e\u003cp\u003eThis oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving emission control efficiency shortly after engine start. The 4-wire design supports both the sensor signal and heater circuit, ensuring consistent performance. With a threaded mounting type and an 18mm thread diameter, the sensor securely installs in the exhaust system. The 29.25-inch wiring harness length provides sufficient reach for proper connection in the specified vehicle models.\u003c\/p\u003e\u003ch2\u003eApplications and Common Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHelps correct inaccurate air-fuel mixture readings\u003c\/li\u003e\n\u003cli\u003eReduces engine misfires and rough idling\u003c\/li\u003e\n\u003cli\u003eImproves fuel efficiency by optimizing combustion\u003c\/li\u003e\n\u003cli\u003ePrevents increased emissions and failed emissions tests\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\u003cp\u003eWhen installing the NTK 25581 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the wiring harness length and connector match the vehicle’s factory setup. Apply anti-seize compound to the threads if recommended by the vehicle manufacturer to facilitate future removal. Confirm proper torque specifications during installation to prevent leaks or damage.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNTK oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The Direct Fit Oxygen Sensor 25581 is manufactured to provide reliable operation under demanding conditions. Warranty coverage details should be confirmed with the point of purchase or NTK directly, as warranty terms may vary.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":43964827992245,"sku":"BFPZ-25581","price":76.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25581_Fro.jpg?v=1775006829","url":"https:\/\/www.partcatalog.com\/products\/ntk-25581-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}