{"product_id":"ntk-25684-air-fuel-ratio-sensor-upstream","title":"NTK 25684 Air \/ Fuel Ratio Sensor - Upstream","description":"\u003ch2\u003eDirect-Fit Air\/Fuel Sensor\u003c\/h2\u003e\u003cp\u003eNTK 25684 is a specific-fit, heated air\/fuel ratio sensor built for OE-style replacement on select Suzuki applications. It uses a 4-wire design and is engineered for accurate upstream exhaust monitoring.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecific-fit replacement for direct application coverage\u003c\/li\u003e\n\u003cli\u003eHeated sensor design for faster operating response\u003c\/li\u003e\n\u003cli\u003e4-wire configuration for stable signal delivery\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter with 0.38 thread length\u003c\/li\u003e\n\u003cli\u003e15.8 wiring harness length for application-specific routing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment Details\u003c\/h2\u003e\u003cp\u003eCompatible with select Suzuki models. Fits 2009-2013 Suzuki Grand Vitara, upstream. Fits 2007-2009 Suzuki SX4, upstream. This part cross-references Bosch 18059 and DENSO Auto Parts 234-9033 for the same application.\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eNTK 25684 belongs to the Direct Fit 4-Wire A\/F Sensor line, which focuses on application-specific coverage and OE-style form. NTK is part of the NGK family of products and is known for oxygen sensor manufacturing with ceramic-based technology and extensive production testing. The result is a sensor line built to match original equipment expectations for fit, function, and signal performance. NTK 25684 is a practical choice when replacing a worn air\/fuel ratio sensor on Suzuki Grand Vitara and Suzuki SX4 vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Replacement Issues\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light related to air\/fuel ratio sensor performance\u003c\/li\u003e\n\u003cli\u003eSlow sensor response during closed-loop fuel control\u003c\/li\u003e\n\u003cli\u003eIncorrect upstream exhaust feedback to the engine management system\u003c\/li\u003e\n\u003cli\u003eSensor aging that affects emissions monitoring and drivability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the connector style, thread size, and upstream application before installation. This sensor uses a heated 4-wire configuration and a specific-fit design, so matching the original routing and sensor location is important. Confirm the vehicle application against the part number 25684 and the listed fitment before replacement.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK tests these sensors during manufacturing to support quality and reliability that meet or exceed OE specifications. The part number 25684 is backed by NTK's OE-focused sensor engineering and application coverage.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731441148085,"sku":"BFPZ-25684","price":196.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25684_Fro.jpg?v=1794296664","url":"https:\/\/www.partcatalog.com\/products\/ntk-25684-air-fuel-ratio-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}