{"product_id":"walker-350-34438-oxygen-sensor","title":"Walker 350-34438 Oxygen Sensor - Downstream Left or Downstream Right","description":"\u003ch2\u003eOverview of Walker 350-34438 Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eThe Walker 350-34438 oxygen sensor is designed specifically for select Lexus models, including the GS350, IS250, IS300, IS350, RC300, and RC350. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor with 4-wire configuration\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Lexus GS350, IS250, IS300, IS350, RC300, and RC350\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18.0 mm thread diameter\u003c\/li\u003e\n\u003cli\u003e41.85 inches wiring harness length with 20 gauge wire\u003c\/li\u003e\n\u003cli\u003eRadiused polygon male connector for secure connection\u003c\/li\u003e\n\u003cli\u003eOverall length of 45.39 inches for proper installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWalker Products Aftermarket Line Details\u003c\/h2\u003e\u003cp\u003eThis oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The product line emphasizes precise fitment and quality construction to meet or exceed OEM standards, ensuring compatibility and durability for emission sensors like the 350-34438.\u003c\/p\u003e\u003ch2\u003eProduct Features and Specifications\u003c\/h2\u003e\u003cp\u003eThe Walker 350-34438 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved sensor responsiveness. It includes a 4-wire design, which supports both the sensor signal and heater circuit, essential for maintaining accurate readings under various operating conditions. The sensor’s wiring harness length of 41.85 inches and overall length of 45.39 inches provide sufficient reach for installation in the specified Lexus models. The radiused polygon male connector ensures a secure and reliable electrical connection, while the threaded mounting type with an 18.0 mm diameter allows for straightforward installation and replacement.\u003c\/p\u003e\u003ch2\u003eApplications and Common 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 engine performance issues such as rough idling or hesitation\u003c\/li\u003e\n\u003cli\u003eReduces emissions by ensuring correct sensor feedback to the ECU\u003c\/li\u003e\n\u003cli\u003ePrevents check engine light triggers related to oxygen sensor faults\u003c\/li\u003e\n\u003cli\u003eSupports fuel efficiency by maintaining optimal combustion conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Walker 350-34438 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector orientation matches the radiused polygon male connector for a secure fit. It is recommended to inspect the wiring harness for any damage before installation and to apply anti-seize compound on the threads if not pre-applied to facilitate future removal.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eWalker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The 350-34438 part number undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region or distributor.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":43538268160181,"sku":"DKHD-350-34438","price":67.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_35034438_Fro.jpg?v=1774892082","url":"https:\/\/www.partcatalog.com\/products\/walker-350-34438-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}