{"product_id":"ntk-25503-oxygen-sensor-upstream","title":"NTK 25503 Oxygen Sensor - Upstream","description":"\u003ch2\u003eDirect Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eNTK Direct Fit Oxygen Sensor 25503 is a specific-fit emission control sensor for compatible Porsche 944 applications. It uses a threaded mounting design and a non-heated, single-wire configuration for direct replacement service.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecific-fit oxygen sensor for emission control service\u003c\/li\u003e\n\u003cli\u003eNon-heated design with one-wire construction\u003c\/li\u003e\n\u003cli\u003eThreaded mounting for secure installation\u003c\/li\u003e\n\u003cli\u003e34-inch wiring harness length\u003c\/li\u003e\n\u003cli\u003e18 mm thread diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment Details\u003c\/h2\u003e\u003cp\u003eFits 1983-1985 Porsche 944, upstream. This part cross-references Monroe Shocks \u0026amp; Struts (e.g., 213-513, 213-2863) for the same application.\u003c\/p\u003e\u003cp\u003eNTK is part of the NGK family and focuses on oxygen sensor coverage for import and domestic vehicles. As a major original equipment oxygen sensor supplier, NTK builds this sensor with manufacturing controls intended to deliver fit, form, and function aligned with OE expectations. The 25503 is a direct-fit replacement for Porsche 944 emission control service, and the 25503 part number is useful when matching the correct sensor for the listed application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFaulty oxygen sensor readings\u003c\/li\u003e\n\u003cli\u003eEmission control warning conditions\u003c\/li\u003e\n\u003cli\u003eRough fuel mixture correction issues\u003c\/li\u003e\n\u003cli\u003eSensor replacement during exhaust service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the threaded mounting style, harness length, and non-heated configuration before installation. Confirm the upstream location and compare the connector and thread specifications to the original sensor on the vehicle. Use the 25503 part number to confirm application details before ordering.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The 25503 is built under NTK's OE-focused sensor program for application-specific replacement service.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731436560565,"sku":"BFPZ-25503","price":57.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25503_Fro.jpg?v=1794296127","url":"https:\/\/www.partcatalog.com\/products\/ntk-25503-oxygen-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}