{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
1999 Audi A4 Quattro

1999 Audi A4 Quattro Oxygen Sensors

Refine by:
See All

Shop Catalog

Showing 1 - 15 of 39 results
Display item:
15
30
45
Sort by:
Oxygen Sensor, 6 Cyl., 2.8L Engine, 4-Wire, Heated
Part Number: REPA960907
Guaranteed to Fit
$13.79
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 66.9 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024174Connector Gender : Male ConnectorWarranty : 1-year DriveWire 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.

Returns Policy : 30-Day Return Policy
Oxygen Sensor, 4-Wire, Heated
Part Number: REPV960906
Guaranteed to Fit
$19.49
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L B1S2
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L B1S2
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 28.7 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024147Connector Gender : Male ConnectorWarranty : 1-year DriveWire 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.

Returns Policy : 30-Day Return Policy
Before Catalytic Converter/After Catalytic Converter Oxygen Sensors 4-wire, B1S2
Part Number: SET-REPV960906-2
Guaranteed to Fit
$36.99
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L B1S2
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L B1S2
Product Details
Location : After Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 28.7 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeConnector Gender : Male ConnectorWarranty : 1-year DriveWire 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.

Returns Policy : 30-Day Return Policy
Before or After Catalytic Converter Oxygen Sensor, 4-Wire
Part Number: REPA960905
Guaranteed to Fit
$6.95
Vehicle Fitment
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L B1S1
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L B1S1
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 25024417Warranty : 1-year DriveWire 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.

Deals : OverstockReturns Policy : 30-Day Return Policy
Oxygen Sensor Premium Universal (Heated 4 Wire) - Replaces OE Number 15738
Part Number: BS0258986505
Guaranteed to Fit
$65.48
Vehicle Fitment
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L
Product Details
Location : Rear, Driver or Passenger SideQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : 15738Warranty : 24-month limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Promotions : European Vehicle PartsSeries : OE Replacement Series
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15160
Guaranteed to Fit
$80.49
Vehicle Fitment
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L Sedan; From Chassis # 8D..W..007 800
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L Wagon
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 53.9 in. Wire LengthInterchange Part Number : 13842Warranty : 1-year Bosch limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Promotions : European Vehicle PartsSeries : OE Replacement Series
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15738
Guaranteed to Fit
$60.49
Vehicle Fitment
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L Wagon
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L Sedan; From Chassis # 8D..W..007 800
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L
Product Details
Location : Downstream or UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 26.8 in. Wire LengthInterchange Part Number : 15730, SG300Warranty : 1-year Bosch limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Promotions : European Vehicle PartsSeries : OE Replacement Series
Before Catalytic Converter, Front or Rear Oxygen Sensor - Replaces OE Number 021906265AK
Part Number: Z8YV10760033
Guaranteed to Fit
$59.49
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L AEB Engine
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L
Product Details
Location : Before Catalytic Converter, Front or RearQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : 021906265AD, 021906265AF, 021906265AK, 021906265AR, 021906265T, 030906265BM, 030906265BR, 037906265AB, 077906265D, 078906265L, 21906265AD, 21906265AF, 21906265AK, 21906265AR, 21906265T, 30906265BM, 30906265BR, 37906265AB, 6K0906265A, 77906265D, 1022476, 95VW9F472FA, 97VW9F472AA, 377906265E, 78906265LInterchange Part Number : 021906265AD, 021906265AF, 021906265AK, 021906265AR, 021906265T, 030906265BM, 030906265BR, 037906265AB, 077906265D, 078906265L, 21906265AD, 21906265AF, 21906265AK, 21906265AR, 21906265T, 30906265BM, 30906265BR, 37906265AB, 6K0906265A, 77906265D, 1022476, 95VW9F472FA, 97VW9F472AA, 377906265E, 78906265LWarranty : 24-month or 24,000-mile Vemo limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Promotions : European Vehicle Parts
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344664
Guaranteed to Fit
$70.99
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L O.E. Quality Replacement Sensor
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L O.E. Quality Replacement Sensor
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L O.E. Quality Replacement Sensor
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L O.E. Quality Replacement Sensor
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 30.9 in. Wire LengthInterchange Part Number : 13842Warranty : 1-year Denso limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034427
Guaranteed to Fit
$55.99
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L Eng. Designation: AHA, Eng. VIN: D, FI, Naturally Aspirated, GAS
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L Eng. Designation: AHA, Eng. VIN: D, FI, Naturally Aspirated, GAS
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L Eng. Designation: AEB, Eng. VIN: B, FI, Turbocharged, GAS
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L Eng. Designation: AEB, Eng. VIN: B, FI, Turbocharged, GAS
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 29.13 in. Wire LengthWarranty : 90-day Walker Products limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Series : Walker Products Aftermarket Base Sensor
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344666
Guaranteed to Fit
$64.99
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L O.E. Quality Replacement Sensor
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L O.E. Quality Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 52.4 in. Wire LengthInterchange Part Number : 13842Warranty : 1-year Denso limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034205
Guaranteed to Fit
$56.99
Vehicle Fitment
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L Eng. Designation: AEB, Eng. VIN: B, FI, Turbocharged, GAS
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L Eng. Designation: AEB, Eng. VIN: B, FI, Turbocharged, GAS
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 56.69 in. Wire LengthWarranty : 90-day Walker Products limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Series : Walker Products Aftermarket Base Sensor
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344201
Guaranteed to Fit
$77.99
Vehicle Fitment
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L O.E. Quality Universal Replacement Sensor
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L O.E. Quality Universal Replacement Sensor
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L O.E. Quality Universal Replacement Sensor
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L O.E. Quality Universal Replacement Sensor
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11.7 in. Wire LengthReplaces OE Number : 9202721Interchange Part Number : 15730, SG300Warranty : 1-year Denso limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024147
Guaranteed to Fit
$70.49
Vehicle Fitment
  • 1999 Audi A4 Quattro Avant 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 6 Cyl 2.8L
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L B1S2
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L B1S2
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 29.13 in. Wire LengthInterchange Part Number : ARBV960904, SG300, 2344809Warranty : 90-day Walker Products limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Series : Walker Products Original Equipment Base Sensor
Oxygen Sensor - Replaces OE Number 021906265AQ
Part Number: Z8YV10760028
Guaranteed to Fit
$72.99
Vehicle Fitment
  • 1999 Audi A4 Quattro Base 4 Cyl 1.8L enginedesignationname: AEB; Eng. VIN: B; Aftermarket Grade; 4 Cables / 1400 mm
  • 1999 Audi A4 Quattro Avant 4 Cyl 1.8L Aftermarket Grade; 4 Cables / 1400 mm
Product Details
Location : Before and After Catalytic Converter, FrontQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : 021906265AA, 021906265AE, 021906265AL, 021906265AQ, 21906265AA, 21906265AE, 21906265AQ, 21906265ALInterchange Part Number : 021906265AA, 021906265AE, 021906265AL, 021906265AQ, 21906265AA, 21906265AE, 21906265AQ, 21906265ALWarranty : 24-month or 24,000-mile Vemo limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical 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.

Promotions : European Vehicle Parts
Page 1 of 3 | Showing 1 - 15 of 39 results

Top Rated Products

I mean it was just what I needed fit good and got rid of my backfire problem so I higSee More
Bryan C.
VERIFIED PURCHASER
Wiring up the connection was a breeze and I saved $$'s opting for this one over the oSee More
Anonymous
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

Q:How many o2 sensors do I need, 2004 BMW 325 ci?
JOHN T.
A:BEST ANSWERHi John, I'm glad to help you out. You need a total of 4 sensors. 2 upstream and 2 downstream. This sensor is for the downstream ports. Use the link below to order the part and take advantage of our 30-day price match guarantee. I hope this helps. Happy shopping. https://www.carparts.com/oxygen-sensor/denso/np2344201?can=cpab2020 Show less
Andrew B.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

P2187 Code: System too Lean at Idle (Bank 1)
P2187 Code: System too Lean at Idle (Bank 1)Note that there is only one bank if your car has a straight engine and the scan tool will always refer to that bank as “Bank 1.” P2187 code indicates that your vehicle’s computer detected a potential issue with the fuel mixture at idle.
P2270 Code: O2 Sensor Signal Biased / Stuck Lean (Bank 1, Sensor 2)
P2270 Code: O2 Sensor Signal Biased / Stuck Lean (Bank 1, Sensor 2)Bank 1 is where the #1 spark plug is. O2 sensor 1/1 is the upstream sensor on Bank 1 (different for a Ford than for a Chevy or a Dodge), and O2 sensor 1/2 is the downstream sensor on Bank 1. O2 2/1 is upstream on Bank 2 and O2
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)With that in mind, it’s important to note that Bank 1 is always where the number 1 cylinder is located. Thus, on Ford pickups, Bank 1 is the passenger side bank, but on Chevy and Dodge pickups, Bank 1 is the driver side bank. You need to know this, or
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3Bank 1 is the side of the engine where the #1 cylinder is located. P0042 code is set when your car’s PCM determines a potential problem with the heater element circuit of the oxygen sensor.
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)Diagnostic trouble code (DTC) P0135 stands for “Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1).” It is set when the car’s primary computer—also called the powertrain control module or PCM—determines that the heated oxygen sensor (HO2S) 1 heater current is higher or lower than the ideal amp for
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)The Bank 1 portion of the code refers to the side of the engine with the number one cylinder. Sensor 1 refers to the upstream O2 sensor.