{"product_id":"walker-350-34442-oxygen-sensor","title":"Walker 350-34442 Oxygen Sensor - Downstream Left","description":"\u003ch2\u003eOverview of Walker Oxygen Sensor 350-34442\u003c\/h2\u003e\u003cp\u003eThe Walker 350-34442 oxygen sensor is designed specifically for select INFINITI and Nissan vehicles, including the Pathfinder and QX4 models. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance through precise air-fuel mixture readings.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated sensor type for faster activation\u003c\/li\u003e\n\u003cli\u003eSpecific fit for INFINITI Pathfinder and Nissan QX4\u003c\/li\u003e\n\u003cli\u003eThreaded mounting with 18.0 mm thread diameter\u003c\/li\u003e\n\u003cli\u003e45.39 inches wiring harness length with 4 wires of 20 gauge\u003c\/li\u003e\n\u003cli\u003eRadiused polygon male connector for secure connection\u003c\/li\u003e\n\u003cli\u003eOverall length of 48.94 inches for proper installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThis oxygen sensor from Walker Products Aftermarket is engineered with a heated sensor element to reduce warm-up time, improving emissions control efficiency. The sensor features a threaded mounting type with an 18.0 mm thread diameter, ensuring a secure and precise fit in the exhaust system. The wiring harness length measures 45.39 inches, providing ample length for installation in the engine bay, while the 20 gauge wire size and 4-wire configuration support reliable signal transmission and heater operation. The connector is a radiused polygon shape with a male gender, designed to match the factory wiring harness for the Nissan QX4 and INFINITI Pathfinder models.\u003c\/p\u003e\u003ch2\u003eWalker Products Aftermarket Line Information\u003c\/h2\u003e\u003cp\u003eThe Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct fit and function for specific vehicle applications. The product line emphasizes durability and compatibility, making it suitable for maintaining factory-level emissions performance on Nissan and INFINITI vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores accurate oxygen sensing for proper air-fuel mixture control\u003c\/li\u003e\n\u003cli\u003eHelps resolve check engine light issues related to oxygen sensor faults\u003c\/li\u003e\n\u003cli\u003eImproves fuel efficiency by providing correct emissions data\u003c\/li\u003e\n\u003cli\u003eReduces exhaust emissions by ensuring proper catalytic converter operation\u003c\/li\u003e\n\u003cli\u003eEliminates rough idling or engine hesitation caused by faulty sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Walker 350-34442 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Connect the radiused polygon male connector securely to the factory harness to avoid signal interruptions. Verify the wiring harness routing to prevent contact with hot exhaust components or moving parts. Proper torque specifications should be followed to avoid sensor damage.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eWalker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for fit, form, and function. Each sensor undergoes rigorous testing to ensure reliable performance in emission control systems. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship, supporting long-term durability and vehicle compliance.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":43538269929653,"sku":"DKHD-350-34442","price":60.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_35034442_Fro.jpg?v=1774892083","url":"https:\/\/www.partcatalog.com\/products\/walker-350-34442-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}