{
"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
}Need Help? Call Us1-866-529-0412
Select your vehicle
Mazda Oxygen Sensors
The oxygen sensor regulates the air-to-gas ratio inside your engine. When it’s faulty, your Mazda will have poor gas mileage and emit harmful odors and toxins. If you’re looking for a high-quality oxygen sensor replacement at a reasonable price, you’ve come to the right place! CarParts.com has a wide range of oxygen sensors designed to provide reliable feedback to your Mazda’s control system. Check out our deals on oxygen sensors for the Mazda 3, Mazda 6, MPV, and many others!
Refine by:
See All
Shop Catalog
Showing 1 - 15 of 596 results
Display item:
15
30
45
Sort by:
Part Number: REPF960904
Vehicle Info Required to Guarantee Fit
$21.99
Product Details
Location : Downstream, Passenger Side, Center, Passenger Side - Before Catalytic Converter, After Catalytic Converter, After Catalytic Converter, Driver Side, Before Catalytic Converter, Driver Side, After Catalytic Converter, Downstream, After Catalytic Converter, Center, After Primary Catalytic Converter, Downstream Or Upstream, Before Catalytic Converter, Driver Side, Upstream, After Catalytic Converter, Before Or After Catalytic Converter, After Catalytic Converter, Front Or Rear, Upstream, Passenger Side, Passenger Side, After Catalytic Converter, Downstream, Rear, After Secondary Catalytic Converter, Before Catalytic Converter, 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 : 25024001, 15717Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: SET-REPF960904-2
Vehicle Info Required to Guarantee Fit
$41.99
Product Details
Location : Before And After Secondary Catalytic Converter, Before And After Catalytic Converter, Driver Side, Before And After Catalytic Converter, Before And After Catalytic Converter, Passenger SideComponents : (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 : 25024001, 15717Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: SET-REPF960904-4
Vehicle Info Required to Guarantee Fit
$83.49
Product Details
Location : Before And After Catalytic ConverterComponents : (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 : 25024001, 15717Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: REPF960902
Vehicle Info Required to Guarantee Fit
$29.99
Product Details
Location : Before Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Catalytic Converter, Driver Side, Before Or After Catalytic Converter, After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 15664Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: SET-REPF960902-2
Vehicle Info Required to Guarantee Fit
$56.49
Product Details
Location : Before Catalytic Converter, Before And After Catalytic Converter, After Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 15664Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: SET-REPF960902-4
Vehicle Info Required to Guarantee Fit
$112.99
Product Details
Location : Before And After Catalytic ConverterComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 15664Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: REPF960907
Vehicle Info Required to Guarantee Fit
$19.49
Product Details
Location : Before Catalytic Converter, Rear, Downstream, After Catalytic Converter, Passenger Side, Before Catalytic Converter, Front Or Rear, Before Catalytic Converter, Downstream, Front, Before Catalytic Converter, Driver Or Passenger Side, Upstream, Before Catalytic Converter, FrontType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024749, 15717Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: SET-REPF960907-2
Vehicle Info Required to Guarantee Fit
$44.49
Product Details
Location : Before Catalytic Converter, Rear, Before Catalytic Converter, Driver And Passenger Side, Before Catalytic Converter, Front And Rear, Before Catalytic Converter, Before Catalytic Converter, FrontComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 11 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024749, 15717Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: REPF960911
Vehicle Info Required to Guarantee Fit
$23.49
Product Details
Location : After Catalytic Converter, Front Or Rear, After Catalytic Converter, Driver Side, After Catalytic Converter, Passenger Side, After Catalytic Converter, Rear, After Catalytic Converter, Driver Or Passenger Side, After Catalytic Converter, FrontType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024983Connector Gender : Female ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: SET-REPF960911-2
Vehicle Info Required to Guarantee Fit
$52.49
Product Details
Location : After Catalytic Converter, Front And Rear, After Catalytic Converter, Rear, After Catalytic Converter, Front, After Catalytic Converter, Driver And Passenger SideComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024983Connector Gender : Female ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: REPS960907
Vehicle Info Required to Guarantee Fit
$37.99
Product Details
Location : Downstream, After Catalytic Converter, Center, After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 21.26 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024440, 2344212Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: F960903
Vehicle Info Required to Guarantee Fit
$22.99
Product Details
Location : Before Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Catalytic Converter, Driver Or Passenger Side, Before Catalytic Converter, Front, Before Or After Catalytic Converter, After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 18.9 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024301Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: SET-F960903-2
Vehicle Info Required to Guarantee Fit
$51.49
Product Details
Location : Before Catalytic Converter, Driver And Passenger Side, Before Catalytic Converter, Before And After Catalytic Converter, Before Catalytic Converter, Front, After Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 18.9 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024301Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: REPF960908
Vehicle Info Required to Guarantee Fit
$19.99
Product Details
Location : Upstream, Passenger Side, After Catalytic Converter, Driver Side, Before Catalytic Converter, Driver Side, After Catalytic Converter, Downstream, Passenger Side, After Catalytic Converter, Downstream, Rear, After Secondary Catalytic Converter, Before Catalytic Converter, Downstream Or Upstream, Before Catalytic Converter, Driver Side, Upstream, After Catalytic Converter, Before Or After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 18.82 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024127, 15717Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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.
Part Number: REPM960921
Vehicle Info Required to Guarantee Fit
$52.99
Product Details
Location : Before Catalytic ConverterNotes : Wideband sensorType : 5-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25025029Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :
WARNING: 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 40 | Showing 1 - 15 of 596 results
Top Rated Products
Popular Products
Product Questions & Answers
Q:Is this upstream?
Amanda G.
A:BEST ANSWERHi Amanda, I'll be glad to assist you. Yes, this is an upstream sensor. Click the link below to order the sensor and enjoy the current 40% sale. Have a good one!
https://www.carparts.com/oxygen-sensor/drivewire/repm960921?can=cpab2020_20220426 Show less
Andrew B.
1 Question, 1 AnswerView all Q&As >
Q:Are these for left and right upstream ?
Darryl A.
A:BEST ANSWERHi Darryl,
These are upstream oxygen sensors for several specific vehicle models.
To check the fitment please use our Vehicle Selector — which can be found towards the top of the homepage as well as all categories, search results, and product pages — can help verify if a part will fit your specific application.
To enter your application, simply select your vehicle’s year, make, model, sub-model, and engine type and click “Go.” Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page. Show less
Aldrin P.
3 Questions, 1 AnswerView all Q&As >
Q:Hi does this fit my 2001 Ford Focus Sensor 2 Upstream I guess that's the front??? Show Less
Gigi's
A:BEST ANSWERHi Christina, thank you for reaching out. This item is a downstream (sensor 2) oxygen sensor for the 2001 Ford Focus with a 2.0-liter engine. The upstream oxygen sensor is sensor 1. Kindly call our parts team at 1-866-529-0412 and provide the complete vehicle information. We'll be more than glad to help you look for the correct oxygen sensor. Have a nice day. Show less
Aldrin P.
5 Questions, 1 AnswerView all Q&As >
Featured Models
Helpful Automotive Resources
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 2P0161 – Sensor Heater Circuit Bank 2 Sensor 2P0135 – O2 Sensor Heater Circuit Bank 1 Sensor 1P0155 – O2 Heater Circuit Bank 2, Sensor 1
Make sure you know bank 1 from
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)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?