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Bosch Oxygen Sensor 17078
BOSCH Oxygen Sensor - 17078
Bosch Oxygen Sensor 17078
BOSCH Oxygen Sensor - 17078

Bosch Oxygen Sensor 17078

BOSCH
Availability:
5+ in stock, ready to be shipped

Ships same or next business day

SKU 17078
$115.36 - $115.36
$115.36
$115.36 - $115.36
$115.36
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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The Bosch Oxygen Sensor 17078 is a direct-fit OE-quality replacement sensor that measures the oxygen content in exhaust gases to optimize the air-fuel mixture. It helps reduce emissions, improve fuel economy, and ensure your engine runs efficiently. This sensor fits a wide range of Audi and Volkswagen models including A1, A2, A3, A4, A5, A6, A7, A8, Q3, Q5, Q7, R8, TT, and many more from 1994 to 2020.

Key Features & Benefits

  • Heated 4-Wire Design: Heated element reaches operating temperature faster, reducing light-off time and ensuring accurate readings from cold start.
  • Direct OE Replacement: Exactly matches the fit, form, and function of the original sensor, making installation straightforward.
  • OEM Cross-Reference 4H0906262N: Validated to replace Audi/VW part number 4H0906262N for guaranteed compatibility.
  • Emissions Compliance: Meets or exceeds OEM specifications to help your vehicle pass emissions tests and run cleaner.
  • Durable Construction: Steel housing and robust connector withstand high exhaust temperatures and road debris for long service life.

Vehicle Fitment

Make Model Years Engine
AUDI A1 (8X1, 8XK) 2010–2015 1.2 TFSI
AUDI A1 (8X1, 8XK) 2011–2015 1.4 TFSI
AUDI A1 (8X1, 8XK) 2012–2015 1.4 TFSI
AUDI A1 (8X1, 8XK) 2012 2.0 TFSI quattro
AUDI A1 (8X1, 8XK) 2014–2018 S1 quattro
AUDI A1 Sportback (8XA, 8XF) 2011–2015 1.4 TFSI
AUDI A1 Sportback (8XA, 8XF) 2012–2015 1.2 TFSI
AUDI A1 Sportback (8XA, 8XF) 2014–2018 S1 quattro
AUDI A2 (8Z0) 2000–2005 1.4 TDI
AUDI A2 (8Z0) 2001–2005 1.2 TDI
AUDI A2 (8Z0) 2002–2005 1.6 FSI
AUDI A2 (8Z0) 2003–2005 1.4 TDI
AUDI A3 (8L1) 1996–2003 1.6
AUDI A3 (8L1) 1996–2001 1.9 TDI
AUDI A3 (8L1) 1997–2001 1.9 TDI
AUDI A3 (8L1) 1998–2003 1.8 T quattro
AUDI A3 (8L1) 1999–2002 S3 quattro
AUDI A3 (8L1) 2000–2003 1.9 TDI
AUDI A3 (8L1) 2001–2003 S3 quattro
AUDI A3 (8P1) 2003–2008 2.0 FSI
AUDI A3 (8P1) 2003–2012 2.0 TDI 16V
AUDI A3 (8P1) 2003–2010 1.9 TDI
AUDI A3 (8P1) 2003–2009 3.2 V6 quattro
AUDI A3 (8P1) 2003–2007 1.6 FSI
AUDI A3 (8P1) 2004–2012 2.0 TFSI
AUDI A3 (8P1) 2005–2008 2.0 TDI
AUDI A3 (8P1) 2006–2012 2.0 TDI
AUDI A3 (8P1) 2006–2008 2.0 TDI quattro
AUDI A3 (8P1) 2007–2012 1.4 TFSI
AUDI A3 (8P1) 2008–2012 1.8 TFSI quattro
AUDI A3 (8P1) 2009–2012 1.6 TDI
AUDI A3 (8P1) 2010–2012 1.2 TSI
AUDI A3 (8P1) 2011–2012 1.6 E-Power
AUDI A3 (8V1, 8VK) 2012–2014 1.4 TFSI
AUDI A3 (8V1, 8VK) 2012–2016 1.8 TFSI
AUDI A3 (8V1, 8VK) 2012–2020 2.0 TDI
AUDI A3 (8V1, 8VK) 2012–2015 1.6 TDI
AUDI A3 (8V1, 8VK) 2012–2017 2.0 TDI
AUDI A3 (8V1, 8VK) 2013–2016 2.0 TDI
AUDI A3 (8V1, 8VK) 2013–2015 1.2 TFSI
AUDI A3 (8V1, 8VK) 2013–2014 S3 quattro
AUDI A3 (8V1, 8VK) 2013–2017 2.0 TDI
AUDI A3 Convertible (8P7) 2008–2013 1.8 TFSI
AUDI A3 Convertible (8P7) 2008–2009 1.9 TDI
AUDI A3 Convertible (8P7) 2008–2010 1.6
AUDI A3 Convertible (8P7) 2009–2013 1.6 TDI
AUDI A3 Convertible (8P7) 2010–2013 1.2 TFSI
AUDI A3 Convertible (8P7) 2011–2013 1.4 TFSI
AUDI A3 Convertible (8V7, 8VE) 2013–2014 1.4 TFSI
AUDI A3 Convertible (8V7, 8VE) 2013–2016 1.8 TFSI
AUDI A3 Convertible (8V7, 8VE) 2013–2020 2.0 TDI
AUDI A3 Convertible (8V7, 8VE) 2014–2016 1.8 TFSI quattro
AUDI A3 Convertible (8V7, 8VE) 2014–2020 S3 quattro
AUDI A3 Convertible (8V7, 8VE) 2015–2017 1.8 40 TFSI
AUDI A3 Limousine (8VS, 8VM) 2013–2020 1.4 TFSI
AUDI A3 Limousine (8VS, 8VM) 2013–2015 1.2 TFSI
AUDI A3 Limousine (8VS, 8VM) 2013–2016 1.8 TFSI quattro
AUDI A3 Limousine (8VS, 8VM) 2013–2014 S3 quattro
AUDI A3 Limousine (8VS, 8VM) 2014–2016 1.2 TFSI
AUDI A3 Sportback (8PA) 2004–2010 1.9 TDI
AUDI A3 Sportback (8PA) 2004–2007 1.6 FSI
AUDI A3 Sportback (8PA) 2004–2009 3.2 V6 quattro
AUDI A3 Sportback (8PA) 2004–2013 2.0 TDI
AUDI A3 Sportback (8PA) 2004–2008 2.0 FSI
AUDI A3 Sportback (8PA) 2005–2013 2.0 TDI 16V quattro
AUDI A3 Sportback (8PA) 2005–2008 2.0 TDI
AUDI A3 Sportback (8PA) 2006–2013 2.0 TDI
AUDI A3 Sportback (8PA) 2006–2008 2.0 TDI quattro
AUDI A3 Sportback (8PA) 2007–2013 1.4 TFSI
AUDI A3 Sportback (8PA) 2008–2013 1.8 TFSI quattro
AUDI A3 Sportback (8PA) 2009–2013 1.6 TDI
AUDI A3 Sportback (8PA) 2010–2013 1.2 TSI
AUDI A3 Sportback (8PA) 2011–2013 1.6 E-Power
AUDI A3 Sportback (8PA) 2011–2012 RS3 quattro
AUDI A3 Sportback (8VA, 8VF) 2012–2020 1.4 TFSI
AUDI A3 Sportback (8VA, 8VF) 2012–2016 1.6 TDI
AUDI A3 Sportback (8VA, 8VF) 2013–2020 2.0 TDI
AUDI A3 Sportback (8VA, 8VF) 2013–2014 1.4 TFSI
AUDI A3 Sportback (8VA, 8VF) 2013–2016 1.8 TFSI quattro
AUDI A3 Sportback (8VA, 8VF) 2013–2015 1.2 TFSI
AUDI A3 Sportback (8VA, 8VF) 2013–2018 2.0 TDI quattro

Technical Specifications

Part Number 17078
OEM Cross-Reference 4H0906262N
Brand Bosch
Type Oxygen Sensor
Material Steel

Installation Notes

Professional installation recommended to ensure proper sensor seating and avoid exhaust leaks.

About Bosch

Bosch is a world-leading automotive supplier and the original developer of the automotive oxygen sensor, trusted by OEMs worldwide for precision and reliability.

This part also goes by the following cross reference.

Cross Reference Part Number: 4H0906262N

Fits These Vehicles 161 applications
8X A1
Make Model Engine Years
AUDI A1 (8X1, 8XK) 1.2 TFSI 2010–2015
AUDI A1 (8X1, 8XK) 1.6 TDI 2010–2015
AUDI A1 (8X1, 8XK) 1.4 TFSI 2010–2015
AUDI A1 (8X1, 8XK) 1.4 TFSI 2011–2015
AUDI A1 (8X1, 8XK) 1.6 TDI 2011–2015
AUDI A1 (8X1, 8XK) 2.0 TDI 2011–2015
AUDI A1 (8X1, 8XK) 1.4 TFSI 2012–2015
AUDI A1 (8X1, 8XK) 2.0 TDI 2012–2015
AUDI A1 (8X1, 8XK) 2.0 TFSI quattro 2012–2012
AUDI A1 (8X1, 8XK) S1 quattro 2014–2018
AUDI A1 (8X1, 8XK) 1.4 TSI 2014–2018
AUDI A1 (8X1, 8XK) 1.4 TFSI 2014–2018
AUDI A1 Sportback (8XA, 8XF) 1.4 TFSI 2011–2015
AUDI A1 Sportback (8XA, 8XF) 1.4 TFSI 2011–2015
AUDI A1 Sportback (8XA, 8XF) 1.6 TDI 2011–2015
AUDI A1 Sportback (8XA, 8XF) 1.6 TDI 2011–2015
AUDI A1 Sportback (8XA, 8XF) 2.0 TDI 2011–2015
AUDI A1 Sportback (8XA, 8XF) 1.2 TFSI 2012–2015
AUDI A1 Sportback (8XA, 8XF) 1.4 TFSI 2012–2015
AUDI A1 Sportback (8XA, 8XF) 2.0 TDI 2012–2015
AUDI A1 Sportback (8XA, 8XF) S1 quattro 2014–2018
AUDI A1 Sportback (8XA, 8XF) 1.4 TSI 2014–2018
A2
Make Model Engine Years
AUDI A2 (8Z0) 1.4 TDI 2000–2005
AUDI A2 (8Z0) 1.4 2000–2005
AUDI A2 (8Z0) 1.2 TDI 2001–2005
AUDI A2 (8Z0) 1.6 FSI 2002–2005
AUDI A2 (8Z0) 1.4 TDI 2003–2005
8L A3
Make Model Engine Years
AUDI A3 (8L1) 1.6 1996–2003
AUDI A3 (8L1) 1.8 1996–2003
AUDI A3 (8L1) 1.8 T 1996–2003
AUDI A3 (8L1) 1.9 TDI 1996–2001
AUDI A3 (8L1) 1.8 T quattro 1996–2003
AUDI A3 (8L1) 1.9 TDI 1997–2001
AUDI A3 (8L1) 1.8 T quattro 1998–2003
AUDI A3 (8L1) 1.8 T 1998–2003
AUDI A3 (8L1) S3 quattro 1999–2002
AUDI A3 (8L1) 1.9 TDI 2000–2003
AUDI A3 (8L1) 1.6 2000–2003
AUDI A3 (8L1) 1.9 TDI quattro 2000–2003
AUDI A3 (8L1) 1.9 TDI 2000–2003
AUDI A3 (8L1) S3 quattro 2001–2003
8P A3
Make Model Engine Years
AUDI A3 (8P1) 2.0 FSI 2003–2008
AUDI A3 (8P1) 2.0 TDI 16V 2003–2012
AUDI A3 (8P1) 1.9 TDI 2003–2010
AUDI A3 (8P1) 2.0 TDI 2003–2012
AUDI A3 (8P1) 3.2 V6 quattro 2003–2009
AUDI A3 (8P1) 1.6 FSI 2003–2007
AUDI A3 (8P1) 2.0 TDI quattro 2003–2008
AUDI A3 (8P1) 1.6 2003–2012
AUDI A3 (8P1) 2.0 TFSI 2004–2012
AUDI A3 (8P1) 2.0 TFSI quattro 2004–2012
AUDI A3 (8P1) 2.0 TDI 16V quattro 2004–2012
AUDI A3 (8P1) 2.0 TDI 2005–2008
AUDI A3 (8P1) 2.0 TDI 2006–2012
AUDI A3 (8P1) 2.0 TDI quattro 2006–2012
AUDI A3 (8P1) S3 quattro 2006–2012
AUDI A3 (8P1) 2.0 TDI quattro 2006–2008
AUDI A3 (8P1) 1.8 TFSI 2006–2012
AUDI A3 (8P1) 1.8 T 2006–2012
AUDI A3 (8P1) 2.0 TDI 2006–2008
AUDI A3 (8P1) 1.4 TFSI 2007–2012
AUDI A3 (8P1) S3 quattro 2007–2012
AUDI A3 (8P1) 1.8 TFSI quattro 2008–2012
AUDI A3 (8P1) 1.6 TDI 2009–2012
AUDI A3 (8P1) 1.6 TDI 2009–2012
AUDI A3 (8P1) 1.2 TSI 2010–2012
AUDI A3 (8P1) 1.6 E-Power 2011–2012
AUDI A3 Convertible (8P7) 1.8 TFSI 2008–2013
AUDI A3 Convertible (8P7) 2.0 TFSI 2008–2013
AUDI A3 Convertible (8P7) 1.9 TDI 2008–2009
AUDI A3 Convertible (8P7) 2.0 TDI 2008–2013
AUDI A3 Convertible (8P7) 1.6 2008–2010
AUDI A3 Convertible (8P7) 2.0 TDI 2008–2013
AUDI A3 Convertible (8P7) 1.6 TDI 2009–2013
AUDI A3 Convertible (8P7) 1.2 TFSI 2010–2013
AUDI A3 Convertible (8P7) 1.4 TFSI 2011–2013
AUDI A3 Sportback (8PA) 1.9 TDI 2004–2010
AUDI A3 Sportback (8PA) 1.6 FSI 2004–2007
AUDI A3 Sportback (8PA) 3.2 V6 quattro 2004–2009
AUDI A3 Sportback (8PA) 2.0 TDI 2004–2013
AUDI A3 Sportback (8PA) 1.6 2004–2013
AUDI A3 Sportback (8PA) 2.0 FSI 2004–2008
AUDI A3 Sportback (8PA) 2.0 TDI 16V 2004–2013
AUDI A3 Sportback (8PA) 2.0 TFSI 2004–2013
AUDI A3 Sportback (8PA) 2.0 TFSI quattro 2004–2013
AUDI A3 Sportback (8PA) 2.0 TDI 16V quattro 2005–2013
AUDI A3 Sportback (8PA) 2.0 TDI 2005–2008
AUDI A3 Sportback (8PA) 2.0 TDI 2006–2013
AUDI A3 Sportback (8PA) 2.0 TDI quattro 2006–2013
AUDI A3 Sportback (8PA) 2.0 TDI quattro 2006–2008
AUDI A3 Sportback (8PA) 1.8 TFSI 2006–2013
AUDI A3 Sportback (8PA) 2.0 TDI 2006–2008
AUDI A3 Sportback (8PA) 1.8 FSI 2006–2008
AUDI A3 Sportback (8PA) 1.4 TFSI 2007–2013
AUDI A3 Sportback (8PA) 1.8 TFSI quattro 2008–2013
AUDI A3 Sportback (8PA) S3 quattro 2008–2013
AUDI A3 Sportback (8PA) S3 quattro 2008–2013
AUDI A3 Sportback (8PA) 1.6 TDI 2009–2013
AUDI A3 Sportback (8PA) 1.6 TDI 2009–2013
AUDI A3 Sportback (8PA) 1.2 TSI 2010–2013
AUDI A3 Sportback (8PA) 1.6 E-Power 2011–2013
AUDI A3 Sportback (8PA) RS3 quattro 2011–2012
8V A3
Make Model Engine Years
AUDI A3 (8V1, 8VK) 1.4 TFSI 2012–2014
AUDI A3 (8V1, 8VK) 1.8 TFSI 2012–2016
AUDI A3 (8V1, 8VK) 2.0 TDI 2012–2020
AUDI A3 (8V1, 8VK) 1.8 TFSI quattro 2012–2016
AUDI A3 (8V1, 8VK) 1.6 TDI 2012–2015
AUDI A3 (8V1, 8VK) S3 quattro 2012–2016
AUDI A3 (8V1, 8VK) 2.0 TDI 2012–2017
AUDI A3 (8V1, 8VK) 2.0 TDI quattro 2012–2017
AUDI A3 (8V1, 8VK) 2.0 TDI quattro 2012–2017
AUDI A3 (8V1, 8VK) 2.0 TDI 2013–2016
AUDI A3 (8V1, 8VK) 1.4 TFSI 2013–2016
AUDI A3 (8V1, 8VK) 1.2 TFSI 2013–2015
AUDI A3 (8V1, 8VK) S3 quattro 2013–2014
AUDI A3 (8V1, 8VK) 2.0 TDI 2013–2017
AUDI A3 (8V1, 8VK) 2.0 TDI 2013–2016
AUDI A3 (8V1, 8VK) 1.6 TDI 2013–2017
AUDI A3 Convertible (8V7, 8VE) 1.4 TFSI 2013–2014
AUDI A3 Convertible (8V7, 8VE) 1.8 TFSI 2013–2016
AUDI A3 Convertible (8V7, 8VE) 2.0 TDI 2013–2020
AUDI A3 Convertible (8V7, 8VE) 1.8 TFSI quattro 2014–2016
AUDI A3 Convertible (8V7, 8VE) S3 quattro 2014–2020
AUDI A3 Convertible (8V7, 8VE) 1.4 TFSI 2014–2016
AUDI A3 Convertible (8V7, 8VE) 1.6 TDI 2014–2020
AUDI A3 Convertible (8V7, 8VE) 2.0 TDI quattro 2014–2020
AUDI A3 Convertible (8V7, 8VE) 1.8 40 TFSI 2015–2017
AUDI A3 Limousine (8VS, 8VM) 1.4 TFSI 2013–2020
AUDI A3 Limousine (8VS, 8VM) 2.0 TDI 2013–2020
AUDI A3 Limousine (8VS, 8VM) 1.2 TFSI 2013–2015
AUDI A3 Limousine (8VS, 8VM) 1.6 TDI 2013–2015
AUDI A3 Limousine (8VS, 8VM) 1.8 TFSI quattro 2013–2016
AUDI A3 Limousine (8VS, 8VM) S3 quattro 2013–2014
AUDI A3 Limousine (8VS, 8VM) 1.4 TFSI 2013–2016
AUDI A3 Limousine (8VS, 8VM) 1.8 TFSI 2013–2016
AUDI A3 Limousine (8VS, 8VM) 2.0 TDI 2013–2016
AUDI A3 Limousine (8VS, 8VM) 1.8 TFSI 2013–2020
AUDI A3 Limousine (8VS, 8VM) 2.0 TFSI quattro 2013–2020
AUDI A3 Limousine (8VS, 8VM) S3 quattro 2013–2020
AUDI A3 Limousine (8VS, 8VM) 1.4 TFSI 2013–2016
AUDI A3 Limousine (8VS, 8VM) 2.0 TDI 2013–2020
AUDI A3 Limousine (8VS, 8VM) 2.0 TDI quattro 2013–2020
AUDI A3 Limousine (8VS, 8VM) 2.0 TDI 2013–2020
AUDI A3 Limousine (8VS, 8VM) 1.2 TFSI 2014–2016
AUDI A3 Sportback (8VA, 8VF) 1.4 TFSI 2012–2020
AUDI A3 Sportback (8VA, 8VF) 1.6 TDI 2012–2016
AUDI A3 Sportback (8VA, 8VF) S3 quattro 2012–2020
AUDI A3 Sportback (8VA, 8VF) 2.0 TDI 2012–2020
AUDI A3 Sportback (8VA, 8VF) 1.8 TFSI 2012–2016
AUDI A3 Sportback (8VA, 8VF) 2.0 TDI 2013–2020
AUDI A3 Sportback (8VA, 8VF) 2.0 TDI 2013–2020
AUDI A3 Sportback (8VA, 8VF) 1.4 TFSI 2013–2014
AUDI A3 Sportback (8VA, 8VF) 1.8 TFSI quattro 2013–2016
AUDI A3 Sportback (8VA, 8VF) 1.2 TFSI 2013–2015
AUDI A3 Sportback (8VA, 8VF) S3 quattro 2013–2016
AUDI A3 Sportback (8VA, 8VF) 1.4 TFSI g-tron 2013–2020
AUDI A3 Sportback (8VA, 8VF) 2.0 TDI quattro 2013–2020
AUDI A3 Sportback (8VA, 8VF) 2.0 TDI quattro 2013–2018
AUDI A3 Sportback (8VA, 8VF) 2.0 TDI 2013–2018
AUDI A3 Sportback (8VA, 8VF) 2.0 TDI 2013–2016
AUDI A3 Sportback (8VA, 8VF) 1.6 TDI 2013–2020
B5 A4
Make Model Engine Years
No vehicles listed for this group.
A4
Make Model Engine Years
No vehicles listed for this group.
B7 A4
Make Model Engine Years
No vehicles listed for this group.
B8 A4
Make Model Engine Years
No vehicles listed for this group.
B8 A5
Make Model Engine Years
No vehicles listed for this group.
C5 A6
Make Model Engine Years
No vehicles listed for this group.
C6 A6
Make Model Engine Years
No vehicles listed for this group.
C7 A6
Make Model Engine Years
No vehicles listed for this group.
C7 A7
Make Model Engine Years
No vehicles listed for this group.
D2 A8
Make Model Engine Years
No vehicles listed for this group.
D3 A8
Make Model Engine Years
No vehicles listed for this group.
D4 A8
Make Model Engine Years
No vehicles listed for this group.
R8
Make Model Engine Years
No vehicles listed for this group.
MK1 TT
Make Model Engine Years
No vehicles listed for this group.
MK2 TT
Make Model Engine Years
No vehicles listed for this group.
8U Q3
Make Model Engine Years
No vehicles listed for this group.
8R Q5
Make Model Engine Years
No vehicles listed for this group.
4L Q7
Make Model Engine Years
No vehicles listed for this group.
7L Touareg
Make Model Engine Years
No vehicles listed for this group.
7P Touareg
Make Model Engine Years
No vehicles listed for this group.
Amarok
Make Model Engine Years
No vehicles listed for this group.
B5 Passat
Make Model Engine Years
No vehicles listed for this group.
B5.5 Passat
Make Model Engine Years
No vehicles listed for this group.
B6 Passat
Make Model Engine Years
No vehicles listed for this group.
B7 Passat
Make Model Engine Years
No vehicles listed for this group.
Passat CC
Make Model Engine Years
No vehicles listed for this group.
EOS
Make Model Engine Years
No vehicles listed for this group.
MK4 Golf
Make Model Engine Years
No vehicles listed for this group.
MK5 Golf
Make Model Engine Years
No vehicles listed for this group.
MK6 Golf
Make Model Engine Years
No vehicles listed for this group.
MK7 Golf
Make Model Engine Years
No vehicles listed for this group.
MK4 Jetta
Make Model Engine Years
No vehicles listed for this group.
MK5 Jetta
Make Model Engine Years
No vehicles listed for this group.
MK6 Jetta
Make Model Engine Years
No vehicles listed for this group.
9N Polo
Make Model Engine Years
No vehicles listed for this group.
6R Polo
Make Model Engine Years
No vehicles listed for this group.
Polo
Make Model Engine Years
No vehicles listed for this group.
Sharan
Make Model Engine Years
No vehicles listed for this group.
T5 Transporter
Make Model Engine Years
No vehicles listed for this group.
Transporter
Make Model Engine Years
No vehicles listed for this group.
Touran
Make Model Engine Years
No vehicles listed for this group.
MK1 Tiguan
Make Model Engine Years
No vehicles listed for this group.
A6
Make Model Engine Years
No vehicles listed for this group.
Jetta
Make Model Engine Years
No vehicles listed for this group.
Passat
Make Model Engine Years
No vehicles listed for this group.
Golf
Make Model Engine Years
No vehicles listed for this group.
Fits 161 vehicle applications Check vehicle fitment before ordering View fitment

About this Oxygen Sensor

The BOSCH 17078 oxygen sensor measures the oxygen in the exhaust so the engine computer can keep the fuel mixture correct. Sensors before the catalytic converter control the mixture; sensors after it monitor the converter's efficiency.

Frequently asked questions

What does an oxygen sensor do?

It reports how rich or lean the exhaust is, and the engine computer adjusts fuel delivery in response. A faulty sensor can make the engine run too rich or too lean.

What are the signs of a failing oxygen sensor?

A check-engine light with oxygen-sensor or fuel-trim codes, poorer fuel economy, rough idle, or a failed emissions test. Exhaust leaks near the sensor can cause similar codes, so check for those too.

How do I know which sensor I need?

Sensors are specific to their position: upstream (before the catalytic converter) or downstream (after it), and on V engines, bank 1 or bank 2. The fault code usually identifies the position; check the product details for the position this sensor fits.

Can I replace an oxygen sensor myself?

Usually, yes, using an oxygen-sensor socket. Many new sensors come with anti-seize already on the threads; if not, use a sensor-safe compound only on the threads, and keep it off the sensor tip.

How do I make sure this oxygen sensor fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

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