{"product_id":"walker-products-350-34039-oxygen-sensor-4-wire-direct-fit-oe-replacement","title":"Walker Products 350-34039 Oxygen Sensor — 4-Wire Direct Fit OE Replacement","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Walker Products 350-34039 Oxygen Sensor is designed as an Original Equipment Manufacturer OE replacement, intended to fit specific vehicle applications and positions. It provides the diagnostic feedback the engine control unit expects, helping your vehicle communicate its exhaust status. Built with a dual lower shield design, a ceramic sensing element, a laser-welded body and shield, high-temperature sleeving, and a plasma-sprayed protective coating, this sensor emphasizes durability and dependable performance. It is corrosion resistant and designed for straightforward installation. All Walker oxygen sensors are engineered, assembled, and 100 percent performance tested in the USA to ensure exact fit, form, and function. A malfunctioning sensor can be accompanied by engine running irregularities, higher fuel use, or elevated emissions readings, so proper installation and connection checks are important.\u003c\/p\u003e\n\u003ch3\u003eKey benefits at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDIRECT-FIT DESIGN: Ready to bolt in with your vehicle’s original mounting points and harness.\u003c\/li\u003e\n  \u003cli\u003eAIR-FUEL MONITORING: Detects oxygen content in exhaust to help the ECU balance the air–fuel ratio.\u003c\/li\u003e\n  \u003cli\u003eEFFICIENCY AND EMISSIONS: Senses oxygen levels to fine-tune the mixture, potentially supporting better fuel economy and lower pollutants.\u003c\/li\u003e\n  \u003cli\u003ePLATINUM ELECTRODE LAYER: Gas-permeable platinum electrodes enable accurate sensing for reliable ECU feedback.\u003c\/li\u003e\n  \u003cli\u003eCOATING PROTECTION: Protective coating guards electrode surfaces from combustion residue and particulates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuality and reliability\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUSA assembled and 100 percent performance tested, emphasizing consistent fit and dependable operation.\u003c\/li\u003e\n  \u003cli\u003eIncludes one unit per package; use the Amazon Confirmed Fit to verify compatibility with your model.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-world use and installation tips\u003c\/h3\u003e\n\u003cp\u003eIn everyday driving—whether city commuting or highway cruising—the sensor supports the ECU in monitoring exhaust oxygen and adjusting the air-fuel mix. While individual results vary by vehicle and condition, proper installation and a healthy wiring harness are key to getting consistent feedback and operation.\u003c\/p\u003e\n\u003cp\u003eIf the sensor fails or becomes contaminated, you might notice symptoms such as irregular idle, changes in fuel economy, or diagnostic trouble codes. Always inspect the sensor, wiring, and connector for damage during replacement to help maximize longevity and performance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What vehicles is the Walker Products 350-34039 Oxygen Sensor compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This 4-wire direct-fit sensor is designed as an OE replacement for many vehicles; confirm compatibility via fitment guides or the listing's Confirmed Fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What benefits can I expect after installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The sensor helps ECU feedback by monitoring exhaust oxygen, which may improve fuel efficiency, smoother operation, and clearer diagnostics when installed correctly.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Walker Products","offers":[{"title":"Default Title","offer_id":42470817988693,"sku":"B01IAFTUDO","price":44.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/walker-products-350-34039-oxygen-sensor-4-wire-direct-fit-front-view.jpg?v=1778149434","url":"https:\/\/plentytorque.co.uk\/products\/walker-products-350-34039-oxygen-sensor-4-wire-direct-fit-oe-replacement","provider":"PlentyTorque","version":"1.0","type":"link"}