{"product_id":"walker-250-54058-oxygen-sensor","title":"Walker 250-54058 Oxygen Sensor - Upstream","description":"\u003ch2\u003eOverview of Walker 250-54058 Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eThe Walker 250-54058 oxygen sensor is designed specifically for select Saab and Subaru models, including the 9-2X, Baja, Forester, Impreza, Legacy, Outback, and WRX STI. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fitment and reliable performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor with 4 wires for accurate readings\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Saab 9-2X and Subaru models like Forester and WRX STI\u003c\/li\u003e\n\u003cli\u003e29.06-inch wiring harness length for flexible installation\u003c\/li\u003e\n\u003cli\u003eThreaded mounting 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 durability and signal integrity\u003c\/li\u003e\n\u003cli\u003eOverall length of 32.6 inches to accommodate engine bay layout\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWalker Products OE Line Details\u003c\/h2\u003e\u003cp\u003eThis oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality and fitment. The OE line ensures that each sensor meets or exceeds factory specifications, providing compatibility and performance tailored to the vehicle’s emission control system requirements.\u003c\/p\u003e\u003ch2\u003eProduct Description and Attributes\u003c\/h2\u003e\u003cp\u003eThe Walker 250-54058 oxygen sensor is a heated sensor designed to provide accurate air-fuel mixture data to the engine control unit. It features a 4-wire configuration with a 20-gauge wire size, which supports efficient heating and signal transmission. The sensor’s wiring harness length of 29.06 inches and overall length of 32.6 inches allow for proper routing and installation in the engine compartment. The threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust system. The radiused polygon male connector is engineered for a precise and reliable electrical connection, reducing the risk of sensor failure due to poor contact.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSaab 9-2X oxygen sensor replacement\u003c\/li\u003e\n\u003cli\u003eSubaru Forester and Baja emission control sensor\u003c\/li\u003e\n\u003cli\u003eSubaru Impreza and WRX STI oxygen sensor upgrade\u003c\/li\u003e\n\u003cli\u003eSubaru Legacy and Outback sensor fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by This Oxygen Sensor\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIncorrect air-fuel mixture readings causing poor fuel economy\u003c\/li\u003e\n\u003cli\u003eCheck engine light triggered by faulty oxygen sensor signals\u003c\/li\u003e\n\u003cli\u003eIncreased emissions due to sensor malfunction\u003c\/li\u003e\n\u003cli\u003eEngine performance issues related to sensor failure\u003c\/li\u003e\n\u003cli\u003eFailed emissions tests requiring sensor replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the engine is cool before beginning installation to avoid burns. Use the correct 18.0 mm socket for removing and installing the sensor. Verify the connector shape and gender match the vehicle’s wiring harness to prevent connection issues. Route the wiring harness carefully to avoid contact with hot exhaust components or moving parts. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eWalker Products OE oxygen sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":43533567426741,"sku":"DKHD-250-54058","price":130.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_25054058_Fro.jpg?v=1774891823","url":"https:\/\/www.partcatalog.com\/products\/walker-250-54058-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}