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Hella 009166821 Oxygen Sensor - Front or Front Right
Hella Oxygen Sensor 009166821
Restore 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.
Key Features
- Hella oxygen sensor / lambda sensor, regulating probe style
- 6-pole connector for OE-style electrical connection
- 1500 mm cable length for factory routing
- Installs in front of the catalytic converter
- Compatible with select Audi A4, Audi TT, Volkswagen Golf, and Volkswagen Jetta applications
- Part number 009166821 for accurate catalog matching
Product Details
Hella 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.
This part cross-references Dorman - HELP 81528 and Four Seasons 75351 for the same application.
What It Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect fuel trim readings
- Rough idle or hesitation tied to air-fuel control
- Failed emissions inspection from a faulty upstream sensor
- Poor fuel economy caused by inaccurate exhaust feedback
Installation Notes
Verify 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.
Quality Assurance
Hella 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.
| Brand | Hella |
| Part Number | 009166821 |
| Position | Hella, Front and Front Right |
| Cable Length [mm] | 1500 |
| Exhaust System | In front of the catalyst |
| Lambda Sensor | Regulating probe |
| Number of Poles | 6 |
| SVHC | 7439-92-1; lead |
This part fits 86 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2006 | Audi | A4 | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Audi | A8 Quattro | 4.2L | V8 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Audi | TT | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Volkswagen | Golf | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Volkswagen | Golf | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Volkswagen | GTI | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Volkswagen | Phaeton | 6.0L | W12 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Volkswagen | Phaeton | 4.2L | V8 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2006 | Volkswagen | Touareg | Base | 4.2L | V8 | Front Right | 6-Pin Connector - Before Catalytic Converter - Cable: 1500mm | |
| 2005 | Audi | A4 | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Audi | A4 Quattro | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Audi | A8 Quattro | 4.2L | V8 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Audi | TT | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Beetle | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Beetle | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Golf | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Golf | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Jetta | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Jetta | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Passat | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Phaeton | 6.0L | W12 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Phaeton | 4.2L | V8 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2005 | Volkswagen | Touareg | Base | 4.2L | V8 | Front Right | 6-Pin Connector - Before Catalytic Converter - Cable: 1500mm | |
| 2004 | Audi | A4 | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Audi | A4 Quattro | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Audi | A8 Quattro | 4.2L | V8 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Audi | TT | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Beetle | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Beetle | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Golf | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Golf | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Jetta | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Jetta | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Jetta | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Passat | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Phaeton | 6.0L | W12 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Phaeton | 4.2L | V8 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2004 | Volkswagen | Touareg | V8 | Front Right | 6-Pin Connector - Before Catalytic Converter - Cable: 1500mm | |||
| 2003 | Audi | A4 | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Audi | A4 Quattro | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Audi | TT | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Beetle | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Beetle | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | EuroVan | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Golf | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Golf | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Jetta | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Jetta | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Jetta | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2003 | Volkswagen | Passat | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Audi | A4 | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Audi | A4 Quattro | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Audi | TT | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Audi | TT Quattro | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Beetle | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Beetle | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | EuroVan | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Golf | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Golf | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Jetta | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Jetta | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Jetta | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2002 | Volkswagen | Passat | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Audi | A4 | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Audi | A4 Quattro | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Audi | TT | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Audi | TT Quattro | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Beetle | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Beetle | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | EuroVan | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Golf | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Golf | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Golf | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Jetta | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Jetta | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Jetta | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2001 | Volkswagen | Passat | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2000 | Volkswagen | Golf | GTI GLX | Front | 6-Pin Connector - Before Catalytic Converter - Cable: 1500mm | |||
| 2000 | Volkswagen | Jetta | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2000 | Volkswagen | Jetta | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2000 | Volkswagen | Jetta | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 2000 | Volkswagen | Passat | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 1999 | Volkswagen | Golf | GTI | 2.8L | V6 | Front | 6-Pin Connector - Before Catalytic Converter - Cable: 1500mm | |
| 1999 | Volkswagen | Jetta | 2.8L | V6 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 1999 | Volkswagen | Jetta | 2.0L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella | |
| 1999 | Volkswagen | Jetta | 1.8L | L4 | GAS | N/A | Lambda Sensor: Regulating Probe; Number of Poles: 6; Exhaust System: in front of the catalyst; Cable Length [mm]: 1500; Hella |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.