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2003 Oldsmobile Alero

Oxygen Sensors

Some telltale signs that your oxygen sensor is starting to fail include the check engine light coming on, poor fuel economy, and the engine running rough. Get a replacement as soon as you confirm that your oxygen sensor is bad. The great news is that here at CarParts.com, we have an oxygen sensor replacement for every application (upstream, downstream, before/after the catalytic converter, etc.). Choose from our wide range of high-quality O2 sensors manufactured by the most reputable names in the industry.
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Oxygen Sensor, 4-Wire, Heated
Part Number: ARBP960910
Guaranteed to Fit
$23.99
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024269Connector Gender : Female 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 Oxygen Sensors 4-wire, Engine VIN: E, FI, Naturally Aspirated, GAS
Part Number: SET-ARBP960910-2
Guaranteed to Fit
$39.49
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L Engine VIN: E, FI, Naturally Aspirated, GAS
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L Engine VIN: E, FI, Naturally Aspirated, GAS
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L Engine VIN: E, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024269Connector Gender : Female 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 and After Catalytic Converter, Driver and Passenger Side Oxygen Sensors, 4-Wire, 6 Cylinder, 3.4L Engine
Part Number: SET-ARBP960910-4
Guaranteed to Fit
$75.49
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L
Product Details
Location : Before and After Catalytic Converter, Driver and Passenger SideComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Product Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024269Connector Gender : Female 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
Part Number: ARBP960912
Guaranteed to Fit
$20.13
Vehicle Fitment
  • 2003 Oldsmobile Alero GL 4 Cyl 2.2L B1S2
  • 2003 Oldsmobile Alero GX 4 Cyl 2.2L B1S2
  • 2003 Oldsmobile Alero GLS 4 Cyl 2.2L B1S2
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 43.25 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024321Connector Gender : Female 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 Oxygen Sensor, 4-wire, 4 Cyl., 2.2L Engine, B1S1
Part Number: REPG960901
Guaranteed to Fit
$23.98
Vehicle Fitment
  • 2003 Oldsmobile Alero GX 4 Cyl 2.2L B1S1
  • 2003 Oldsmobile Alero GLS 4 Cyl 2.2L B1S1
  • 2003 Oldsmobile Alero GL 4 Cyl 2.2L B1S1
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.3 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024273Connector 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 Oxygen Sensors, 4-wire, 4 Cyl., 2.2L Engine, B1S1
Part Number: SET-REPG960901-2
Guaranteed to Fit
$45.49
Vehicle Fitment
  • 2003 Oldsmobile Alero GX 4 Cyl 2.2L B1S1
  • 2003 Oldsmobile Alero GLS 4 Cyl 2.2L B1S1
  • 2003 Oldsmobile Alero GL 4 Cyl 2.2L B1S1
Product Details
Location : Before Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 12.3 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
Rear Oxygen Sensor, Sold individually 4-wire
Part Number: DELES20003
Guaranteed to Fit
$52.99
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L
Product Details
Location : RearType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 44.88 in. Wire LengthThread Size : 18 x 1.5 mm Thread SizeInterchange Part Number : 15730, SG300Warranty : 1-year or 12,000-mile Delphi 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 : Labor Day Sale
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024273
Guaranteed to Fit
$49.99
Vehicle Fitment
  • 2003 Oldsmobile Alero GX 4 Cyl 2.2L B1S1
  • 2003 Oldsmobile Alero GLS 4 Cyl 2.2L B1S1
  • 2003 Oldsmobile Alero GL 4 Cyl 2.2L B1S1
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.2 in. Wire LengthInterchange Part Number : REPG960901Warranty : 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
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024269
Guaranteed to Fit
$46.99
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthInterchange Part Number : ARBP960910Warranty : 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
Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034134
Guaranteed to Fit
$50.49
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L Eng. VIN: E, FI, Naturally Aspirated, GAS
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 44.88 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
Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034094
Guaranteed to Fit
$34.49
Vehicle Fitment
  • 2003 Oldsmobile Alero GX 4 Cyl 2.2L Eng. Designation: L61, Eng. VIN: F, FI, Naturally Aspirated, GAS
  • 2003 Oldsmobile Alero GLS 4 Cyl 2.2L Eng. Designation: L61, Eng. VIN: F, FI, Naturally Aspirated, GAS
  • 2003 Oldsmobile Alero GL 4 Cyl 2.2L Eng. Designation: L61, Eng. VIN: F, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.20 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
Downstream OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS13111
Guaranteed to Fit
$53.49
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L OE manufactured part
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L OE manufactured part
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L OE manufactured part
Product Details
Location : DownstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 2344668Warranty : 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: BS15896
Guaranteed to Fit
$37.99
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L OE manufactured part
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L OE manufactured part
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L OE manufactured part
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 14.2 in. Wire LengthMounting Style : Threaded-in Mounting StyleInterchange Part Number : 2344668Connector Gender : Female ConnectorWarranty : 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
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344000
Guaranteed to Fit
$46.99
Vehicle Fitment
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L O.E. Quality Universal Replacement Sensor
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L O.E. Quality Universal Replacement Sensor
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L O.E. Quality Universal Replacement Sensor
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 13231Warranty : 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.

OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS13483
Guaranteed to Fit
$48.99
Vehicle Fitment
  • 2003 Oldsmobile Alero GLS 6 Cyl 3.4L Alternative Fit 1; OE manufactured part
  • 2003 Oldsmobile Alero GX 6 Cyl 3.4L Alternative Fit 1; OE manufactured part
  • 2003 Oldsmobile Alero GL 6 Cyl 3.4L Alternative Fit 1; OE manufactured part
Product Details
Location : DownstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWarranty : 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
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Product Questions & Answers

Q:Where is the firmest of this sensor?
Pedro C.
A:BEST ANSWERHi Pedro, thank you for reaching out! I do not understand what you mean. Did you mean to use another word than firmest? If not, can you rephrase your question? Show less
Andrew B.
 
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Q:Hy I trying to buy all the o2 sensors for my 2002 Tahoe flex fuel vin # z which other part number for the upstream and downstream? I think I have four Show Less
Tony …….
A:BEST ANSWERHi Tony, I'm glad to assist you. Give our Sales Team a call at 1-866-529-0412 with the complete VIN for them to check on what we have available for your Tahoe. I hope this helps, and happy shopping. Show less
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Shopping for Oxygen Sensor

Oxygen Sensor Shopping Info

What Is an Oxygen Sensor?

Modern vehicles are equipped with oxygen sensors, which monitor the amount of oxygen in the exhaust pipe. This part works with the engine control module to maintain your vehicle’s performance and keep its emissions in check.

How Much Does an Oxygen Sensor Replacement Cost?

Replacement oxygen sensors cost anywhere from $10 to $600 for the part alone. Factors that affect this part’s pricing include quantity, location, sensor type, and kit inclusions. Labor can cost you an additional $60 to $70, depending on where you live.

Shop for Aftermarket Oxygen Sensors on CarParts.com

Need to get an OE-grade oxygen sensor replacement fast? Here at CarParts.com, you don’t have to wait in line at a brick-and-mortar store just to get the part you need. With just a few clicks, you can get your orders delivered right to your doorstep in as fast as two business days.

Oxygen sensor replacements are typically sold individually, but you can also purchase them in sets of two or in kits that include catalytic converters. They’re also sold in a variety of inlet types and dimensions, so make sure to double-check if you’ve chosen a part with the right specifications.

With all these options and specifications to look out for, shopping for oxygen sensors can seem like an intimidating task. But with our user-friendly website, you can buy the right oxygen sensor in just a few clicks. Our products are manufactured in world-class facilities and have gone through strict tests to ensure their quality. This way, you can rest easy knowing that you’re getting high-quality products at unbeatable prices.

To view oxygen sensors and other compatible parts for your vehicle, use our vehicle selector tool and enter your vehicle’s specific year, make, and model. You can also indicate your preferences using our search filters. Buying oxygen sensors is easy and convenient here at CarParts.com. Shop now!

Helpful Automotive Resources

P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)P0141 is part of a family of codes listed as follows: P0141 – Sensor Heater Circuit Bank 1 Sensor 2 P0161 – Sensor Heater Circuit Bank 2 Sensor 2 P0135 – O2 Sensor Heater Circuit Bank 1 Sensor 1 P0155 – O2 Heater Circuit Bank 2, Sensor 1 Make sure you know bank 1 from
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3When there are only 3 O2 sensors it’s typically because there’s only one catalyst being monitored, and “Bank 1” is the default designation when there’s only one sensor in a category. Diagram showing 3 oxygen sensors | Image Source: Richard McCuistian
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)Due to this, the O2 sensor features an integrated heater circuit to bring it up to operating temperature after a cold start. When this circuit stops functioning properly, it can trigger a P0135. The oxygen sensor monitors your vehicle’s air-to-fuel ratio. What Does the P0135 Code Mean?