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The Following brands are available based on your search.

  • Bosch
    Bosch
  • Delphi
    Delphi
  • Denso
    Denso
  • Spectra
    Spectra
  • Vemo
    Vemo
  • Walker
    Walker

Shop By Related Oxygen Sensor Parts

Shop below for all Oxygen Sensor related parts for your Audi


Shop for Top Selling Genuine Audi S4 O2 Sensors

  • We Stock the following top leading brands, including Delphi, Denso, Walker
  • Constantly Updated Inventory of Audi S4 Replacement O2 Sensor Parts
Delphi
1994 Audi S4 Oxygen Sensor - Upstream Delphi

P311-274EBB0    ES10242  New

213544 , 138-165 , 13101 , 1563005 , 39210-22100 , 077906265A , SG90 , AGU1870 , 234-3019 , 138165 , 2131238 , 9392726 , OS524 , 93 92726 , 2131239 , SG383 , 76303320 , DBC4138 , SG47 , 13019 , 138352 , 25034 , 213526 , 213500 , SG55 , 2343048 , 077906265 , 156-3005 , 213548 , SG101 , 2131289 , 3921022100 , OS522 , SU493 , 034 906 265 F , 213606 , 21324 , 034906265G , 213555 , SG85 , DAC6907 , SU472 , 25023048 , OS532 , 2131226 , 213533 , SU484 , 034 906 265 C , 25035 , REA1143 , 60567759 , 2343019 , 250-23048 , 1563017 , OS512 , 161241101601 , 2131174 , OS562 , 60507690 , 213527 , 3921022105 , 034906265F , 1563078 , 13957 , 605076900 , 213532 , 9392762 , 034906265C

Qty:
$66.05
  • Oxygen Sensor
  • Wrench Size: 7/8 in Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Square And Round
    • Overall Length: 1215.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation.
Brand: Delphi
Position: Upstream
Additional Fitment Information:
Vehicle Position
1994 - Audi S4 Upstream
Delphi
2002 Audi S4 Oxygen Sensor - Front Delphi

P311-218AF72    ES20160  New

25024395 , 078906265M , 25589 , SG1210 , 1K0 998 262 AB , 2344812 , REA1723 , 234-4812 , 078 906 265 M , 1K0998262AB , 16073 , SU6319 , 16287 , OS2096

Qty:
$128.88
  • Oxygen Sensor
  • Wrench Size: 7/8 in Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Flat
    • Overall Length: 620.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Delphi
Position: Front
Additional Fitment Information:
Vehicle Submodel Position
2002 - Audi S4 Avant Front
Denso
1994 Audi S4 Oxygen Sensor - Upstream 5 Cyl 2.2L Denso - OE Style

P311-3A8611E    234-3019  New

13019 , DBC10744 , 3531400 , SG42 , 1346738 , 25034 , SG90 , 75-4455 , OS532 , OS1433 , SG47 , 077906265 , ES10240 , 13957 , 25524 , ES10242 , 75-1534 , SG283 , 13313 , SG860 , OS522 , 75-1530 , 034906265A , 213-1239 , 213-1289 , 213-1255

Qty:
$65.26
Denso Oxygen Sensor  Upstream
  • Oxygen Sensor 3 Wire, Direct Fit, Heated, Wire Length: 38.82
  • OE Style
  • Product Attributes:
    • Connector Gender: Male Female
    • Mounting Type: Threaded
    • Sensor Type: Heated
    • Thread Diameter: 0.708
    • Wiring Harness Length: 38.82
  • DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Position: Upstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
1994 - Audi S4 Upstream L 5 Cyl 2.2L - 2226
Walker
2009 Audi S4 Oxygen Sensor - Downstream Right 8 Cyl 4.2L Walker - Walker OE

P311-06FFD33    250-24493  New

Qty:
$78.99
Walker Oxygen Sensor  Downstream Right
  • Premium Oxygen Sensor
  • Downstream Right
  • Walker OE
  • Walker Premium Oxygen Sensors are 100% OEM Quality. Oxygen Sensors are designed to determine the oxygen concentration in exhaust gas. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or exceed all original equipment specifications and test requirements. These superior sensors feature only the highest quality material available. Replacing an improperly functioning oxygen sensor with a Walker sensor will increase fuel economy, improve engine performance, and produce lower emissions.
Brand: Walker
Position: Downstream Right
Additional Fitment Information:
Vehicle Engine Designation Aspiration Fuel Type Fuel Delivery Type Position Block Engine CID CC
2009 - Audi S4 BHF Naturally Aspirated GAS FI Downstream Right V 8 Cyl 4.2L - 4163
Walker
2009 Audi S4 Oxygen Sensor - Upstream Right 8 Cyl 4.2L Walker - Walker OE

P311-39A5D90    250-25007  New

Qty:
$93.53
Walker Oxygen Sensor  Upstream Right
  • Premium Oxygen Sensor
  • Upstream Right
  • Walker OE
  • Walker Premium Wideband Oxygen Sensors are 100% OEM Quality.  Wideband Oxygen Sensors are designed to measure a wider range of oxygen concentrations in exhaust gas than standard sensors.  Walker Wideband Oxygen Sensors are precision made for outstand
Brand: Walker
Position: Upstream Right
Additional Fitment Information:
Vehicle Engine Designation Aspiration Fuel Type Fuel Delivery Type Position Block Engine CID CC
2009 - Audi S4 BHF Naturally Aspirated GAS FI Upstream Right V 8 Cyl 4.2L - 4163
Walker
2009 Audi S4 Oxygen Sensor - Upstream Left 8 Cyl 4.2L Walker - Walker OE

P311-39A5D90    250-25007  New

Qty:
$93.53
Walker Oxygen Sensor  Upstream Left
  • Premium Oxygen Sensor
  • Upstream Left
  • Walker OE
  • Walker Premium Wideband Oxygen Sensors are 100% OEM Quality.  Wideband Oxygen Sensors are designed to measure a wider range of oxygen concentrations in exhaust gas than standard sensors.  Walker Wideband Oxygen Sensors are precision made for outstand
Brand: Walker
Position: Upstream Left
Additional Fitment Information:
Vehicle Engine Designation Aspiration Fuel Type Fuel Delivery Type Position Block Engine CID CC
2009 - Audi S4 BHF Naturally Aspirated GAS FI Upstream Left V 8 Cyl 4.2L - 4163
Walker
2015 Audi S4 Oxygen Sensor - Upstream Left 6 Cyl 3.0L Walker - Walker OE

P311-03BA449    250-25017  New

Qty:
$108.19
Walker Oxygen Sensor  Upstream Left
  • Premium Oxygen Sensor
  • Upstream Left
  • Walker OE
  • Walker Premium Wideband Oxygen Sensors are 100% OEM Quality.  Wideband Oxygen Sensors are designed to measure a wider range of oxygen concentrations in exhaust gas than standard sensors.  Walker Wideband Oxygen Sensors are precision made for outstand
Brand: Walker
Position: Upstream Left
Additional Fitment Information:
Vehicle Engine Designation Aspiration Fuel Type Fuel Delivery Type Position Block Engine CID CC
2015 - Audi S4 CTUB Supercharged GAS FI Upstream Left V 6 Cyl 3.0L - 2995
Walker
2015 Audi S4 Oxygen Sensor - Upstream Right 6 Cyl 3.0L Walker - Walker OE

P311-03BA449    250-25017  New

Qty:
$108.19
Walker Oxygen Sensor  Upstream Right
  • Premium Oxygen Sensor
  • Upstream Right
  • Walker OE
  • Walker Premium Wideband Oxygen Sensors are 100% OEM Quality.  Wideband Oxygen Sensors are designed to measure a wider range of oxygen concentrations in exhaust gas than standard sensors.  Walker Wideband Oxygen Sensors are precision made for outstand
Brand: Walker
Position: Upstream Right
Additional Fitment Information:
Vehicle Engine Designation Aspiration Fuel Type Fuel Delivery Type Position Block Engine CID CC
2015 - Audi S4 CTUB Supercharged GAS FI Upstream Right V 6 Cyl 3.0L - 2995
Walker
2002 Audi S4 Oxygen Sensor - Downstream Right 6 Cyl 2.7L Walker - Walker Aftermarket

P311-3878179    350-34138  New

Qty:
$67.85
Walker Oxygen Sensor  Downstream Right
  • Aftermarket Oxygen Sensor
  • Downstream Right
  • Walker Aftermarket
  • Product Attributes:
    • California Proposition 65: Warning: Operating, Servicing And Maintaining A Passenger Vehicle Or Off-road Vehicle Can Expose You To Chemicals Including Engine Exhaust, Carbon Monoxide, Phthalates, And Lead, Which Are Known To The State Of California To Cause Cancer, Birth Defects Or
    • California Proposition 65_2: Warning: This Product Can Expose You To Lead, Which Is Known To The State Of California To Cause Cancer, Birth Defects Or Other Reproductive Harm (for More Information Go To Www.p65warnings.ca.gov)
    • Connector Shape: Radiused Polygon
    • Mounting Type: Threaded
    • Overall Length: 67.64
    • Sensor Type: Heated
    • Thread Diameter: 18.0
    • Wiring Harness Length: 64.09
  • Walker Products Engine Management and Oxygen/Air-Fuel sensors have been engineered and developed to be an Original Equipment Manufacturers replacement for many vehicles worldwide. Every part number is manufactured for the specific application, fitment position on the vehicle, and will provide the relevant diagnostic system feedback as required by the ECU.Newer vehicles will store fault codes in the ECU, some will relate to the affected sensor and its associated systems. A failed sensor might make itself known by causing the engine to run poorly, increase fuel consumption, exhaust emissions, or illuminating a (MIL) malfunction indicator light. The sensor, wiring harness, and connector should also be checked for physical damage. This will most likely also cause their operational life to be shortened.We are an Automotive ISO9001/TS 16949 certified company, with un-paralleled customer service, marketing, and shipping. Our electronic and paper catalogs are designed for today’s fast paced marketplace, along with our eye catching packaging. Since 1946, Walker Products has been the number one choice for the engine management sensors and fuel system components needed for your vehicle.
Brand: Walker
Position: Downstream Right
Additional Fitment Information:
Vehicle Engine Designation Aspiration Fuel Type Engine VIN Fuel Delivery Type Position Block Engine CID CC
2002 - Audi S4 APB Turbocharged GAS D FI Downstream Right V 6 Cyl 2.7L - 2671
Walker
2002 Audi S4 Oxygen Sensor - Downstream Left 6 Cyl 2.7L Walker - Walker Aftermarket

P311-3878179    350-34138  New

Qty:
$67.85
Walker Oxygen Sensor  Downstream Left
  • Aftermarket Oxygen Sensor
  • Downstream Left
  • Walker Aftermarket
  • Product Attributes:
    • California Proposition 65: Warning: Operating, Servicing And Maintaining A Passenger Vehicle Or Off-road Vehicle Can Expose You To Chemicals Including Engine Exhaust, Carbon Monoxide, Phthalates, And Lead, Which Are Known To The State Of California To Cause Cancer, Birth Defects Or
    • California Proposition 65_2: Warning: This Product Can Expose You To Lead, Which Is Known To The State Of California To Cause Cancer, Birth Defects Or Other Reproductive Harm (for More Information Go To Www.p65warnings.ca.gov)
    • Connector Shape: Radiused Polygon
    • Mounting Type: Threaded
    • Overall Length: 67.64
    • Sensor Type: Heated
    • Thread Diameter: 18.0
    • Wiring Harness Length: 64.09
  • Walker Products Engine Management and Oxygen/Air-Fuel sensors have been engineered and developed to be an Original Equipment Manufacturers replacement for many vehicles worldwide. Every part number is manufactured for the specific application, fitment position on the vehicle, and will provide the relevant diagnostic system feedback as required by the ECU.Newer vehicles will store fault codes in the ECU, some will relate to the affected sensor and its associated systems. A failed sensor might make itself known by causing the engine to run poorly, increase fuel consumption, exhaust emissions, or illuminating a (MIL) malfunction indicator light. The sensor, wiring harness, and connector should also be checked for physical damage. This will most likely also cause their operational life to be shortened.We are an Automotive ISO9001/TS 16949 certified company, with un-paralleled customer service, marketing, and shipping. Our electronic and paper catalogs are designed for today’s fast paced marketplace, along with our eye catching packaging. Since 1946, Walker Products has been the number one choice for the engine management sensors and fuel system components needed for your vehicle.
Brand: Walker
Position: Downstream Left
Additional Fitment Information:
Vehicle Engine Designation Aspiration Fuel Type Engine VIN Fuel Delivery Type Position Block Engine CID CC
2002 - Audi S4 APB Turbocharged GAS D FI Downstream Left V 6 Cyl 2.7L - 2671