{"product_id":"walker-250-25003-oxygen-sensor","title":"Walker 250-25003 Oxygen Sensor","description":"\u003ch2\u003eWalker Products OE Oxygen Sensor for Select European Vehicles\u003c\/h2\u003e\u003cp\u003eWalker Products OE 250-25003 is a heated oxygen sensor built as a direct-fit replacement for specific Mercedes-Benz, Volkswagen, BMW, Porsche, Bentley, and Audi-era applications listed below. It is engineered for the sensor location and ECU feedback required by the vehicle, making it a practical choice for upstream oxygen sensor replacement on select SLK200, C200, Jetta, Golf, and BMW 7 Series applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for precise exhaust feedback\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for the listed vehicle applications\u003c\/li\u003e\n\u003cli\u003e5-wire configuration with a male connector\u003c\/li\u003e\n\u003cli\u003eThreaded mounting with 18.0 mm thread diameter\u003c\/li\u003e\n\u003cli\u003eWiring harness length: 32.99 in; overall length: 36.54 in\u003c\/li\u003e\n\u003cli\u003eWalker Products OE line engineered for application-specific fitment and ECU signal response\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker Products OE 250-25003 is part of the Walker Products OE line, which focuses on original-equipment-style replacement sensors for vehicle-specific locations and diagnostic requirements. This oxygen sensor is designed for upstream use where the ECU relies on accurate exhaust gas feedback to manage fuel control and emissions. For drivers searching for a Mercedes-Benz SLK200 upstream oxygen sensor, a Volkswagen Jetta upstream oxygen sensor, or a BMW 745i upstream oxygen sensor, this part number provides a targeted replacement option. The same part number, 250-25003, also appears in fitment for select Volkswagen Golf, Touareg, Passat, Phaeton, EuroVan, and Porsche Cayenne applications.\u003c\/p\u003e\u003cp\u003eThis part cross-references Bosch 15717 and Denso 234-9005 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light related to oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy caused by inaccurate air-fuel feedback\u003c\/li\u003e\n\u003cli\u003eRough engine operation from incorrect ECU fueling corrections\u003c\/li\u003e\n\u003cli\u003eElevated exhaust emissions from a failing upstream sensor\u003c\/li\u003e\n\u003cli\u003eFault codes stored in the ECU for sensor or related system issues\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Fitment\u003c\/h2\u003e\u003cp\u003eFits 2012-2013 Mercedes-Benz SLK200, upstream. Fits 2005-2009 Mercedes-Benz SLK200, upstream. Fits 2010 Mercedes-Benz C200, upstream. Fits 2003-2004 Mercedes-Benz C200, upstream. Fits 2004-2009 Volkswagen Touareg, upstream right. Fits 2004-2006 BMW 545i, upstream right. Fits 2004-2006 BMW 545i, upstream left. Fits 2004-2006 BMW 760i, upstream right. Fits 2004-2006 BMW 760i, upstream left. Fits 2003-2006 BMW 760Li, upstream right. Fits 2003-2006 BMW 760Li, upstream left. Fits 2004-2006 BMW X5, upstream left. Fits 2003-2006 Porsche Cayenne, upstream right. Fits 2003-2006 Porsche Cayenne, upstream left. Fits 2001-2006 Volkswagen Golf, upstream. Fits 2004-2006 Volkswagen Phaeton, upstream right. Fits 2004-2005 BMW 645Ci, upstream right. Fits 2004-2005 BMW 645Ci, upstream left. Fits 2004-2005 BMW 745i, upstream right. Fits 2004-2005 BMW 745i, upstream left. Fits 2002 BMW 745i, upstream left. Fits 2004-2005 BMW 745Li, upstream right. Fits 2004-2005 BMW 745Li, upstream left. Fits 2003-2005 Mercedes-Benz C230, upstream. Fits 1999-2005 Volkswagen Golf, upstream. Fits 2001-2005 Volkswagen Jetta, upstream. Fits 2004-2005 Volkswagen Phaeton, upstream. Fits 1999-2004 Volkswagen Beetle, upstream. Fits 1999-2004 Volkswagen Jetta, upstream. Fits 2002-2004 Volkswagen Passat, upstream rear. Fits 2003 Bentley Continental, upstream right. Fits 2003 BMW 745i, upstream right. Fits 2003 BMW 745i, upstream left. Fits 2003 BMW 745Li, upstream right. Fits 2003 BMW 745Li, upstream left. Fits 2003 Volkswagen EuroVan, upstream.\u003c\/p\u003e\u003cp\u003eBefore installation, verify the connector shape, wire count, thread diameter, and sensor position against the original unit. Inspect the wiring harness and connector for heat damage, abrasion, or corrosion, since damaged wiring can shorten sensor life and affect ECU feedback.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Products has supplied engine management and oxygen sensor components since 1946 and manufactures under Automotive ISO9001\/TS 16949 quality systems. The OE line is built around application-specific fitment and diagnostic signal requirements for the listed vehicles.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":51870208655541,"sku":"DKHD-250-25003","price":99.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_25025003_Fro.jpg?v=1774891770","url":"https:\/\/www.partcatalog.com\/products\/walker-250-25003-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}