{"product_id":"delphi-es10309-oxygen-sensor","title":"Delphi ES10309 Oxygen Sensor - Rear Left or Rear Right","description":"\u003ch2\u003eOverview of Delphi ES10309 Heated Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eThe Delphi ES10309 oxygen sensor is designed for precise emission control in select Audi and Volkswagen models. This heated sensor ensures accurate air-fuel mixture readings, helping maintain optimal engine performance and emissions compliance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster response times\u003c\/li\u003e\n\u003cli\u003e4-wire design with flat connector shape for reliable electrical connection\u003c\/li\u003e\n\u003cli\u003eThread size of 18 x 1.5 mm for secure fitment\u003c\/li\u003e\n\u003cli\u003eOverall length of 1705.0 mm to accommodate rear sensor positions\u003c\/li\u003e\n\u003cli\u003eIncludes oxygen sensor and instruction sheet for installation guidance\u003c\/li\u003e\n\u003cli\u003eCompatible with rear left and rear right positions depending on vehicle\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Delphi ES10309 oxygen sensor is engineered to meet the specific emission control requirements of Audi A4, A4 Quattro, A6, A6 Quattro, and Volkswagen Passat models. Featuring a heated sensor element, it provides quicker warm-up times compared to unheated sensors, which improves fuel efficiency and reduces emissions during cold starts. The sensor’s 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. Its flat connector shape facilitates a secure and corrosion-resistant electrical connection, while the 18 x 1.5 mm thread size guarantees proper installation in the designated rear left or rear right exhaust locations. The overall length of 1705.0 mm allows for flexible routing in the exhaust system. This part comes with an instruction sheet to assist with proper installation and positioning based on your vehicle’s specifications.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHelps maintain correct air-fuel ratio for efficient combustion\u003c\/li\u003e\n\u003cli\u003eReduces engine misfires caused by faulty oxygen sensor readings\u003c\/li\u003e\n\u003cli\u003ePrevents increased emissions and failed emissions tests\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by providing accurate feedback to the engine control unit\u003c\/li\u003e\n\u003cli\u003eResolves check engine light triggers related to oxygen sensor faults\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Delphi ES10309 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the instruction sheet provided to verify the correct rear left or rear right position for your specific Audi or Volkswagen model. Apply anti-seize compound to the sensor threads if recommended by the vehicle manufacturer to facilitate future removal. Tighten the sensor to the specified torque to prevent exhaust leaks. Verify the electrical connector is fully seated and secure to avoid signal interruptions.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDelphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES10309 part number undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty terms may vary, Delphi typically offers coverage against defects in materials and workmanship. Refer to the product documentation or your supplier for detailed warranty information.\u003c\/p\u003e","brand":"Delphi","offers":[{"title":"Default Title","offer_id":43388510601397,"sku":"BBMX-ES10309","price":131.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DE_ES10309_Fro.jpg?v=1774711975","url":"https:\/\/www.partcatalog.com\/products\/delphi-es10309-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}