{"product_id":"ntk-25537-oxygen-sensor-upstream","title":"NTK 25537 Oxygen Sensor - Upstream","description":"\u003ch2\u003eDirect Fit Oxygen Sensor for OE Applications\u003c\/h2\u003e\u003cp\u003eNTK 25537 is a direct fit heated oxygen sensor built for specific upstream applications. It uses a threaded mounting design, a 4-wire configuration, and a 39.7500 wiring harness length for a precise replacement on select Rolls-Royce and Bentley models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster operating response\u003c\/li\u003e\n\u003cli\u003eSpecific fit design for direct replacement use\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18.000 thread diameter\u003c\/li\u003e\n\u003cli\u003e4-wire construction for the correct signal and heater circuit layout\u003c\/li\u003e\n\u003cli\u003e39.7500 wiring harness length for application-specific routing\u003c\/li\u003e\n\u003cli\u003eNTK 25537 part number for catalog matching and ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 25537 is part of the Direct Fit Oxygen Sensor line, engineered for OE-style replacement where exact fit and function matter. NTK is known for oxygen sensor manufacturing and uses ceramic technology developed in-house to control the sensor from raw material through finished production. This sensor is designed for upstream air\/fuel ratio monitoring on 1993-1995 Rolls-Royce Silver Spirit, 1993-1995 Rolls-Royce Silver Spur, 1994-1995 Rolls-Royce Silver Spirit, 1994-1995 Rolls-Royce Silver Spur, 1993-1994 Bentley Turbo R, and 1994 Rolls-Royce Corniche IV applications. The NTK 25537 is tested during manufacturing to meet or exceed OE specifications for fit, form, and function.\u003c\/p\u003e\u003ch2\u003eCommon Replacement Issues\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFaulty upstream oxygen sensor readings\u003c\/li\u003e\n\u003cli\u003eDelayed heater circuit response\u003c\/li\u003e\n\u003cli\u003eIncorrect air\/fuel ratio feedback to the engine control system\u003c\/li\u003e\n\u003cli\u003eCheck engine light concerns related to sensor performance\u003c\/li\u003e\n\u003cli\u003eConnector or harness mismatch on a direct replacement sensor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle year, model, and upstream position before installation. Confirm the threaded mounting style, 4-wire layout, and harness length match the original sensor. This part cross-references Bosch 13330 for the same application.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that these oxygen sensors are extensively tested during manufacturing and built to meet or exceed OE specifications. The brand is part of the NGK family and is recognized as a major original equipment oxygen sensor supplier.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731437346997,"sku":"BFPZ-25537","price":80.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25537_Fro.jpg?v=1794296225","url":"https:\/\/www.partcatalog.com\/products\/ntk-25537-oxygen-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}