{"product_id":"walker-250-25091-oxygen-sensor","title":"Walker 250-25091 Oxygen Sensor - Downstream or Upstream","description":"\u003ch2\u003eOverview of Walker Products OE Oxygen Sensor 250-25091\u003c\/h2\u003e\u003cp\u003eThe Walker Products OE Oxygen Sensor 250-25091 is designed specifically for select Mercedes-Benz models, including the E350 and Sprinter series. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor with 5-wire configuration\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Mercedes-Benz E350, Sprinter 2500, Sprinter 3500, and Sprinter 3500XD\u003c\/li\u003e\n\u003cli\u003e19.21-inch wiring harness length for flexible installation\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18.0 mm thread diameter\u003c\/li\u003e\n\u003cli\u003eRadiused polygon male connector for secure connection\u003c\/li\u003e\n\u003cli\u003eWire gauge measurement of 20 for reliable signal transmission\u003c\/li\u003e\n\u003cli\u003eOverall length of 22.76 inches for proper fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-25091 oxygen sensor is a heated sensor designed to provide fast response times and accurate readings critical for emission control systems. Its 5-wire design includes a heating element that allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor features a radiused polygon male connector, ensuring a secure and precise fit with the vehicle’s wiring harness. With a wiring harness length of 19.21 inches and an overall length of 22.76 inches, this sensor is engineered for a specific fitment on Mercedes-Benz E350 and Sprinter models, guaranteeing compatibility and ease of installation.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores accurate oxygen sensing for proper air-fuel mixture control\u003c\/li\u003e\n\u003cli\u003eHelps resolve rough idling and engine hesitation\u003c\/li\u003e\n\u003cli\u003eReduces increased fuel consumption caused by faulty sensors\u003c\/li\u003e\n\u003cli\u003ePrevents emission test failures due to sensor malfunction\u003c\/li\u003e\n\u003cli\u003eEliminates check engine light codes related to oxygen sensor faults\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Walker 250-25091 oxygen sensor requires removal of the old sensor from the threaded mounting point. Ensure the connector matches the radiused polygon male design for proper connection. The 19.21-inch wiring harness length provides flexibility during installation, but care should be taken to avoid wire damage. Use appropriate tools to avoid damaging the 18.0 mm thread diameter during removal or installation. It is recommended to check for any exhaust leaks and clean the mounting area before installing the new sensor.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eWalker Products OE parts are manufactured to meet original equipment standards, ensuring reliable performance and durability. The 250-25091 oxygen sensor undergoes rigorous testing to comply with emission control requirements. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship, providing confidence in the sensor’s long-term functionality.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":43533283983541,"sku":"DKHD-250-25091","price":117.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_25025091_Fro.jpg?v=1774891794","url":"https:\/\/www.partcatalog.com\/products\/walker-250-25091-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}