{"product_id":"hella-009166821-oxygen-sensor-front-or-front-right","title":"Hella 009166821 Oxygen Sensor - Front or Front Right","description":"\u003ch2\u003eHella Oxygen Sensor 009166821\u003c\/h2\u003e\u003cp\u003eRestore accurate air-fuel feedback with this Hella oxygen sensor, part number 009166821. It is a 6-pin regulating probe mounted in front of the catalyst with a 1500 mm cable, built for direct replacement on select Audi and Volkswagen applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHella oxygen sensor \/ lambda sensor, regulating probe style\u003c\/li\u003e\n\u003cli\u003e6-pole connector for OE-style electrical connection\u003c\/li\u003e\n\u003cli\u003e1500 mm cable length for factory routing\u003c\/li\u003e\n\u003cli\u003eInstalls in front of the catalytic converter\u003c\/li\u003e\n\u003cli\u003eCompatible with select Audi A4, Audi TT, Volkswagen Golf, and Volkswagen Jetta applications\u003c\/li\u003e\n\u003cli\u003ePart number 009166821 for accurate catalog matching\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eHella 009166821 is an upstream oxygen sensor used to monitor exhaust oxygen content before the catalyst so the engine control module can adjust fuel delivery. This matters for drivability, emissions performance, and fuel control on vehicles such as the Audi A4, Audi TT, Volkswagen Golf, and Volkswagen Jetta. The 6-pin design and 1500 mm lead length support OE-style replacement where the original sensor uses the same configuration.\u003c\/p\u003e\u003cp\u003eThis part cross-references Dorman - HELP 81528 and Four Seasons 75351 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light related to oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003eIncorrect fuel trim readings\u003c\/li\u003e\n\u003cli\u003eRough idle or hesitation tied to air-fuel control\u003c\/li\u003e\n\u003cli\u003eFailed emissions inspection from a faulty upstream sensor\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy caused by inaccurate exhaust feedback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify connector style, pole count, and sensor location before installation. This sensor is specified for the exhaust system in front of the catalyst, and fitment includes front or front-right applications depending on vehicle. Confirm routing length and mounting position on the vehicle before replacing the original unit. Fits 2001-2006 Audi A4, N\/A; Fits 2004-2006 Audi A8 Quattro, N\/A; Fits 2001-2006 Audi TT, N\/A; Fits 2001-2006 Volkswagen Golf, N\/A; Fits 2006 Volkswagen GTI, N\/A; Fits 2004-2006 Volkswagen Phaeton, N\/A; Fits 2004-2006 Volkswagen Touareg, Front Right; Fits 2001-2005 Audi A4 Quattro, N\/A; Fits 2001-2005 Volkswagen Beetle, N\/A; Fits 1999-2005 Volkswagen Jetta, N\/A; Fits 2000-2005 Volkswagen Passat, N\/A; Fits 2001-2003 Volkswagen EuroVan, N\/A; Fits 2001-2002 Audi TT Quattro, N\/A; Fits 1999-2000 Volkswagen Golf, Front.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eHella is an established OE supplier in automotive electronics and sensor technology. Part number 009166821 is built to match the listed application requirements for connector count, cable length, and sensor placement.\u003c\/p\u003e","brand":"Hella","offers":[{"title":"Default Title","offer_id":52415098355893,"sku":"BFDP-009166821","price":100.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HL_009166821_Fro.jpg?v=1777799618","url":"https:\/\/www.partcatalog.com\/products\/hella-009166821-oxygen-sensor-front-or-front-right","provider":"PartCatalog","version":"1.0","type":"link"}