{"product_id":"denso-234-5143-air-fuel-ratio-sensor","title":"Denso 234-5143 Air \/ Fuel Ratio Sensor - Downstream or Upstream","description":"\u003ch2\u003eReliable Air\/Fuel Ratio Sensor for Audi, Bentley, and Volkswagen\u003c\/h2\u003e\u003cp\u003eThe Denso OE Style 234-5143 air\/fuel ratio sensor is designed specifically for select Audi, Bentley, and Volkswagen models. This heated sensor ensures accurate emissions control and optimal engine performance by precisely monitoring the air-to-fuel mixture.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated sensor type for faster response times\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Audi A3, A8 Quattro, TT Quattro, TTS Quattro, Bentley Mulsanne, and Volkswagen Golf, Golf Alltrack, Golf SportWagen, GTI\u003c\/li\u003e\n\u003cli\u003eWiring harness length of 34.37 inches for proper installation\u003c\/li\u003e\n\u003cli\u003eFive-wire configuration with male connector for secure connection\u003c\/li\u003e\n\u003cli\u003eThread diameter of 0.711 inches for exact fitment\u003c\/li\u003e\n\u003cli\u003eRegular grade type ensuring consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Denso OE Style Product Line\u003c\/h2\u003e\u003cp\u003eThe OE Style line from Denso offers replacement parts engineered to meet original equipment specifications. The 234-5143 air\/fuel ratio sensor maintains the quality and fitment standards expected from factory components, providing a direct replacement for emission control sensors in compatible Audi, Bentley, and Volkswagen vehicles.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis Denso air\/fuel ratio sensor (part number 234-5143) is a heated sensor designed to provide accurate feedback to the engine control unit (ECU) by measuring the oxygen content in the exhaust gases. Its specific fitment ensures compatibility with various Audi models such as the A3 and A8 Quattro, Bentley Mulsanne, and Volkswagen Golf variants including the GTI and Golf SportWagen. The 34.37-inch wiring harness length and five-wire setup with a male connector facilitate straightforward installation and reliable electrical connection. The sensor’s 0.711-inch thread diameter matches OEM specifications, ensuring a secure and leak-free fit.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHelps maintain proper air\/fuel mixture for efficient combustion\u003c\/li\u003e\n\u003cli\u003eReduces emissions by providing accurate sensor data to the ECU\u003c\/li\u003e\n\u003cli\u003ePrevents engine performance issues related to faulty oxygen sensing\u003c\/li\u003e\n\u003cli\u003eResolves check engine light triggers related to air\/fuel ratio sensor faults\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by optimizing fuel delivery based on sensor feedback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure vehicle compatibility with Audi A3, A8 Quattro, Bentley Mulsanne, Volkswagen Golf, GTI, and related models before installation\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery before sensor replacement to avoid electrical shorts\u003c\/li\u003e\n\u003cli\u003eUse proper tools to avoid damaging the 0.711-inch threaded sensor\u003c\/li\u003e\n\u003cli\u003eVerify the five-wire harness connection and male connector seating for secure fit\u003c\/li\u003e\n\u003cli\u003eFollow manufacturer torque specifications to prevent sensor damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDenso OE Style sensors are manufactured to meet strict quality standards consistent with original equipment parts. The 234-5143 air\/fuel ratio sensor undergoes rigorous testing to ensure durability and reliable performance in emission control systems. Warranty coverage details should be confirmed with the parts provider or vehicle manufacturer.\u003c\/p\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":43978976886965,"sku":"BBNF-234-5143","price":177.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NP_2345143_Fro.jpg?v=1775007463","url":"https:\/\/www.partcatalog.com\/products\/denso-234-5143-air-fuel-ratio-sensor","provider":"PartCatalog","version":"1.0","type":"link"}