{"product_id":"ntk-25634-oxygen-sensor-upstream","title":"NTK 25634 Oxygen Sensor - Upstream","description":"\u003ch2\u003eDirect Fit Oxygen Sensor for Volvo 240\u003c\/h2\u003e\u003cp\u003eNTK 25634 is a direct fit heated oxygen sensor built for specific applications. It is engineered with a threaded mounting design and OE-style fit, form, and function for emission control service on the Volvo 240.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster signal response.\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for direct replacement service.\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type for secure installation.\u003c\/li\u003e\n\u003cli\u003e66.75-inch wiring harness length for application-specific routing.\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 25634 is part of the Direct Fit Oxygen Sensor line, a product family focused on application-specific replacement coverage. NTK draws on its OE oxygen sensor manufacturing background and ceramic technology to deliver a sensor that matches the intended fit, form, and function for emission system service. This part cross-references Bosch 13308 for the same application.\u003c\/p\u003e\u003cp\u003eFits 1993 Volvo 240, upstream, with B1S1 California emissions and OE equivalent design notes. For Volvo 240 emission control repair, this oxygen sensor supports accurate exhaust feedback in the specified upstream location. The NTK 25634 part number is useful when matching the correct sensor for this exact application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a worn or slow-responding oxygen sensor.\u003c\/li\u003e\n\u003cli\u003eRestoring proper exhaust feedback for engine management.\u003c\/li\u003e\n\u003cli\u003eAddressing emissions-related fault codes tied to sensor performance.\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues caused by inaccurate air-fuel feedback.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the upstream location, California emissions note, and B1S1 application before ordering. Confirm the threaded mounting style, 3-wire configuration, and harness length against the original sensor. Use the NTK 25634 part number to match the correct direct-fit replacement for the Volvo 240.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK is an original equipment oxygen sensor supplier with manufacturing and testing processes aimed at meeting or exceeding OE specifications. Each sensor is tested during production for quality and reliability.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731439771829,"sku":"BFPZ-25634","price":130.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25634_Fro.jpg?v=1794296512","url":"https:\/\/www.partcatalog.com\/products\/ntk-25634-oxygen-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}