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Oxygen Sensor - 4-Wire, Heated
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$25.03
Vehicle Fitment
  • 2004 - 2005 Audi S4 All Submodels All Engines
Product Details
Location : After Catalytic ConverterNotes : Heated; Designed to fit screw-in type bungs; May not fit with flanges; Includes Butt type connectors, without plugType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 4-Wire, Heated
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$25.03
Vehicle Fitment
  • 2000 - 2002 Audi S4 All Submodels All Engines
Product Details
Location : Before Catalytic ConverterNotes : Heated; Designed to fit screw-in type bungs; May not fit with flanges; Includes Butt type connectors, without plugType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 4-Wire, Heated
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$25.03
Vehicle Fitment
  • 1992 - 2012 Audi S4 All Submodels All Engines
Product Details
Notes : Heated; Designed to fit screw-in type bungs; May not fit with flanges; Includes Butt type connectors, without plugType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Universal Oxygen Sensor, Heated, 4-Wire, Set of 2
Replacement
Part Number: SET-USOS-4000-2
Vehicle Info Required to Guarantee Fit
$47.56
Vehicle Fitment
  • 1992 - 2012 Audi S4 All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Universal Oxygen Sensor, Heated, 4-Wire, Set of 3
Replacement
Part Number: SET-USOS-4000-3
Vehicle Info Required to Guarantee Fit
$71.34
Vehicle Fitment
  • 1992 - 2012 Audi S4 All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (3) Oxygen SensorsType : 4-wireQuantity Sold : Set of 3Recommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Universal Oxygen Sensor, Heated, 4-Wire, Set of 4
Replacement
Part Number: SET-USOS-4000-4
Vehicle Info Required to Guarantee Fit
$95.12
Vehicle Fitment
  • 1992 - 2012 Audi S4 All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Recommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 4-Wire
Replacement
Part Number: ARBA960903
Vehicle Info Required to Guarantee Fit
$27.76
Vehicle Fitment
  • 2000 - 2002 Audi S4 Base 6 Cyl 2.7L
  • 2001 - 2002 Audi S4 Avant 6 Cyl 2.7L
Product Details
Location : Before Or After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 24.41 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 16073Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - Set of 2
Replacement
Part Number: SET-ARBA960903-2
Vehicle Info Required to Guarantee Fit
$52.75
Vehicle Fitment
  • 2000 - 2002 Audi S4 Base 6 Cyl 2.7L
  • 2001 - 2002 Audi S4 Avant 6 Cyl 2.7L
Product Details
Location : Before And After Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 24.41 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 16073Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 4-Wire, Heated
Replacement
Part Number: ARBV960907
Vehicle Info Required to Guarantee Fit
$27.76
Vehicle Fitment
  • 2000 - 2002 Audi S4 Base 6 Cyl 2.7L
  • 2001 - 2002 Audi S4 Avant 6 Cyl 2.7L
Product Details
Location : Before Catalytic Converter, Driver Or Passenger SideType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 24.5 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24395Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - Set of 2
Replacement
Part Number: SET-ARBV960907-2
Vehicle Info Required to Guarantee Fit
$52.75
Vehicle Fitment
  • 2000 - 2002 Audi S4 Base 6 Cyl 2.7L
  • 2001 - 2002 Audi S4 Avant 6 Cyl 2.7L
Product Details
Location : Before Catalytic Converter, Driver And Passenger SideComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 24.5 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24395Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 4-Wire, Heated
Replacement
Part Number: ARBV960910
Vehicle Info Required to Guarantee Fit
$38.54
Vehicle Fitment
  • 2000 - 2002 Audi S4 Base 6 Cyl 2.7L
  • 2001 - 2002 Audi S4 Avant 6 Cyl 2.7L
Product Details
Location : After Catalytic Converter, Driver Or Passenger SideType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 66.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24414Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - Set of 4
Replacement
Part Number: SET-ARBV960907-4
Vehicle Info Required to Guarantee Fit
$125.97
Vehicle Fitment
  • 2000 - 2002 Audi S4 Base 6 Cyl 2.7L
  • 2001 - 2002 Audi S4 Avant 6 Cyl 2.7L
Product Details
Location : Before And After Catalytic Converter, Driver And Passenger SideComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-24414, 250-24395Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 5-Wire, Wideband Sensor
Replacement
Part Number: REPA960911
Vehicle Info Required to Guarantee Fit
$74.22
Vehicle Fitment
  • 2010 - 2013 Audi S4 Base 6 Cyl 3.0L
  • 2015 Audi S4 Premium Plus 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
  • 2015 Audi S4 Prestige 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
  • 2015 Audi S4 Progressiv 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
  • 2015 Audi S4 Technik 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
Product Details
Location : Before Catalytic Converter, Driver Or Passenger SideNotes : Wideband sensorType : 5-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-25017Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - Before Catalytic Converter, Driver and Passenger Side, Set of 2
Vehicle Info Required to Guarantee Fit
$141.02
Vehicle Fitment
  • 2010 - 2013 Audi S4 Base 6 Cyl 3.0L
  • 2015 Audi S4 Premium Plus 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
  • 2015 Audi S4 Prestige 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
  • 2015 Audi S4 Progressiv 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
  • 2015 Audi S4 Technik 6 Cyl 3.0L Engine Designation: CTUB, FI, Supercharged, GAS
Product Details
Location : Before Catalytic Converter, Driver And Passenger SideNotes : Wideband sensorComponents : (2) Oxygen SensorsType : 5-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-25017Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 5-Wire, Wideband Sensor
Replacement
Part Number: REPB960919
Vehicle Info Required to Guarantee Fit
$45.28
Vehicle Fitment
  • 2004 - 2008 Audi S4 Avant 8 Cyl 4.2L
  • 2004 - 2008 Audi S4 Base 8 Cyl 4.2L
  • 2004 - 2008 Audi S4 Cabriolet 8 Cyl 4.2L
Product Details
Location : Before Catalytic Converter, Driver Or Passenger SideNotes : Wideband sensorType : 5-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 250-25002Connector Gender : Male ConnectorWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Page 1 of 8 | Showing 1 - 15 of 108 results

Audi S4 Oxygen Sensor Customer Reviews

Great price
Travis W Harris Jr
VERIFIED PURCHASER
Purchased on Aug 11, 2020
Oxygen Sensor - 4-Wire, Heated
Jun 26, 2020
Great parts, but ripped off on installation at BrakeMasters
Very happy with both the items you sent me, exactly what I ordered and fast delivery. I got both the "before" and "after" catalytic converter sensors, since the mechanic at BrakeMasters wasn't sure which one was causing the engine light. I told them to fix whichever it was - but the price the quoted me for a factory original sensor was $250.00 (!!) so I ordered these on-line from you, with their approval, and dropped them off. However, they later told my wife that neither unit would fit my 2012 Kia Sportage - some nonsense about "California Emission standards" (we live in Arizona and I bought the new car here). She didn't understand the details, and told them to get one that did fit and install it. When I picked up the car, the bill was $352.00!! And when they gave me the parts back, only the "after converter" unit had been opened - the other was still sealed in the packaging. Yet it was that one - the "before" unit - that they had replaced. They wrote on the Invoice that the parts I supplied didn't fit - now I'm going to have to return them to you, but not until I sort this out with BrakeMasters, where I've been a customer for almost 20 years. Wish me luck.
sid stephen
VERIFIED PURCHASER
Purchased on Jun 10, 2020
I'm a little confused!!!! I installed the o2 sensor and I still have the same problem. I might need the air injection pump to complete my mission.
Ronald Thompson
VERIFIED PURCHASER
Purchased on May 22, 2020

Helpful Automotive Resources

P0059 Code: HO2S Heater Resistance (Bank 2, Sensor 1)
September 23, 2020
P0059 Code: HO2S Heater Resistance (Bank 2, Sensor 1)When a sensor sends data to the vehicle’s main computer that’s not within the expected range, the computer stores this information as a diagnostic trouble code (DTC). This code is a combination of letters and numbers that indicates the nature and source of the issue. DTCs are typically standardized but
P0058 Code: HO2S Heater Control Circuit High (Bank 2, Sensor 2)
September 23, 2020
P0058 Code: HO2S Heater Control Circuit High (Bank 2, Sensor 2)Trouble codes are a set of letters and numbers that indicate the nature and source of the issue in a vehicle. The P0058 code is a trouble code that you may have already encountered. Find out more about this code, its definition, causes, and symptoms with this short guide. What
P0057 Code: HO2S Heater Control Circuit Low (Bank 2, Sensor 2)
September 23, 2020
P0057 Code: HO2S Heater Control Circuit Low (Bank 2, Sensor 2)Diagnostic trouble code (DTC) P0057 stands for “HO2S Heater Control Circuit Low (Bank 2, Sensor 2).” This code sets when the powertrain control module (PCM) detects an issue with the oxygen (O2) sensor’s heater circuit. In some cases, this code may be also taken to mean that the PCM detects
P0056 Code: HO2S Heater Control Circuit Bank 2 Sensor 2
September 23, 2020
P0056 Code: HO2S Heater Control Circuit Bank 2 Sensor 2Bank 2 is the side of the engine that does not contain the #1 cylinder. The oxygen sensor 2 located on this bank is also known as the downstream oxygen sensor because it is located after the catalytic converter.
P0051 Code: HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
September 23, 2020
P0051 Code: HO2S Heater Control Circuit Low (Bank 2 Sensor 1)The oxygen sensor referred to in this trouble code is the oxygen sensor #1 that’s located on Bank 2 in front of the catalytic converter. The side of the engine that does not contain cylinder #1 is called Bank 2.
P0055 Code: HO2S Heater Resistance (Bank 1, Sensor 3)
September 23, 2020
P0055 Code: HO2S Heater Resistance (Bank 1, Sensor 3)Diagnostic trouble code (DTC) P0055 code stands for “HO2S Heater Resistance (Bank 1, Sensor 3).” This code is set when the powertrain control module (PCM) has detected a potential issue in the heater circuit of the downstream or pre-catalytic converter oxygen sensor for bank 1. If the PCM detects a
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