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1991 Ford Mustang
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1991 Ford Mustang

1991 Ford Mustang Oxygen Sensors

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Before Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, 4 Cylinder, 2.3L Engine, B1S1
DriveWire
Before Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, 4 Cylinder, 2.3L Engine, B1S1
Part Number: REPF960904
Guaranteed to Fit
$19.99
Vehicle Fitment
  • 1991 Ford Mustang LX 4 Cyl 2.3L B1S1
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 : 25024001Connector 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., 2.3L Engine, B1S1
DriveWire
Before Catalytic Converter Oxygen Sensors, 4-wire, 4 Cyl., 2.3L Engine, B1S1
Part Number: SET-REPF960904-2
Guaranteed to Fit
$38.99
Vehicle Fitment
  • 1991 Ford Mustang LX 4 Cyl 2.3L B1S1
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 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 Catalytic Converter Oxygen Sensor, Sold individually 3-wire
DriveWire
Before Catalytic Converter Oxygen Sensor, Sold individually 3-wire
Part Number: ARBM960901
Guaranteed to Fit
$19.49
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L
  • 1991 Ford Mustang LX 8 Cyl 5.0L
Product Details
Location : Before Catalytic ConverterType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 25023002Warranty : 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
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Bosch®
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15716
Guaranteed to Fit
$36.49
Vehicle Fitment
  • 1991 Ford Mustang LX 4 Cyl 2.3L OE manufactured part
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11.8 in. Wire LengthInterchange Part Number : 15718Warranty : 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 3-wire
Denso®
Oxygen Sensor, Sold individually 3-wire
Part Number: NP2343000
Guaranteed to Fit
$42.99
Vehicle Fitment
  • 1991 Ford Mustang LX 8 Cyl 5.0L O.E. Quality Universal Replacement Sensor
  • 1991 Ford Mustang GT 8 Cyl 5.0L O.E. Quality Universal Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 13942Warranty : 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 3-wire
Bosch®
OE Replacement Series Oxygen Sensor, Sold individually 3-wire
Part Number: BS15725
Guaranteed to Fit
$50.49
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L OE Manufactured Part; For Part Number E7Tf9F472Aa; E77F9F472Aa; E77F9F472Ba; E9Sf9F472Aa; E97F9F472Aa
  • 1991 Ford Mustang LX 8 Cyl 5.0L OE Manufactured Part; For Part Number E7Tf9F472Aa; E77F9F472Aa; E77F9F472Ba; E9Sf9F472Aa; E97F9F472Aa
Product Details
Location : UpstreamType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 29.7 in. Wire LengthInterchange Part Number : AFS21, 15737Warranty : 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 Oxygen Sensor, Sold individually 3-wire
Denso®
Before Catalytic Converter Oxygen Sensor, Sold individually 3-wire
Part Number: NP2343002
Guaranteed to Fit
$38.99
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L O.E. Quality Replacement Sensor
  • 1991 Ford Mustang LX 8 Cyl 5.0L O.E. Quality Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 13942, 2343000Warranty : 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.

Oxygen Sensor, Sold individually 4-wire
Denso®
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344610
Guaranteed to Fit
$34.99
Vehicle Fitment
  • 1991 Ford Mustang LX 4 Cyl 2.3L O.E. Quality Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 2344609, ES20104Warranty : 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.

Before Catalytic Converter Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 3-wire
Walker Products®
Before Catalytic Converter Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 3-wire
Part Number: WKP35033014
Guaranteed to Fit
$33.49
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 1991 Ford Mustang LX 8 Cyl 5.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 10.83 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
Before Catalytic Converter Oxygen Sensor, Sold individually 3-wire
NTK®
Before Catalytic Converter Oxygen Sensor, Sold individually 3-wire
Part Number: NG22013
Guaranteed to Fit
$34.49
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L
  • 1991 Ford Mustang LX 8 Cyl 5.0L
Product Details
Location : Before Catalytic ConverterNotes : Heated Sensor TypeType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 19 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleInterchange Part Number : 13942, 2343000Warranty : NGK 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 3-wire
Bosch®
OE Replacement Series Oxygen Sensor, Sold individually 3-wire
Part Number: BS13953
Guaranteed to Fit
$32.49
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L OE Manufactured Part; Alternative Fit 2; For Part Number E7Tf9F472Aa; E77F9F472Aa; E77F9F472Ba; E9Sf9F472Aa; E97F9F472Aa
  • 1991 Ford Mustang LX 8 Cyl 5.0L OE Manufactured Part; Alternative Fit 2; For Part Number E7Tf9F472Aa; E77F9F472Aa; E77F9F472Ba; E9Sf9F472Aa; E97F9F472Aa
Product Details
Location : UpstreamType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 13942, 2343000Warranty : 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 3-wire
Delphi®
Oxygen Sensor, Sold individually 3-wire
Part Number: DELES10133
Guaranteed to Fit
$39.99
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L With 285mm Overall Length
  • 1991 Ford Mustang LX 8 Cyl 5.0L With 285mm Overall Length
Product Details
Type : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11.22 in. Wire LengthThread Size : 18 x 1.5 mm Thread SizeInterchange Part Number : 13942, 2343000Warranty : 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.

Before Catalytic Converter Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 3-wire
Walker Products®
Before Catalytic Converter Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 3-wire
Part Number: 25023002
Guaranteed to Fit
$48.99
Vehicle Fitment
  • 1991 Ford Mustang GT 8 Cyl 5.0L
  • 1991 Ford Mustang LX 8 Cyl 5.0L
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 3-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 10.83 in. Wire LengthInterchange Part Number : ARBM960901Warranty : 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, Sold individually
AC Delco®
Oxygen Sensor, Sold individually
Part Number: AC213618
Guaranteed to Fit
$53.99
Vehicle Fitment
  • 1991 Ford Mustang LX 4 Cyl 2.3L
Product Details
Quantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco 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.

Oxygen Sensor, Sold individually
Aceon®
Oxygen Sensor, Sold individually
Part Number: ACB88260001
Guaranteed to Fit
$66.66
Vehicle Fitment
  • 1991 Ford Mustang LX 4 Cyl 2.3L
Product Details
Location : Before Catalytic ConverterQuantity Sold : Sold individuallyProduct Fit : Direct FitWarranty : Aceon 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.

Page 1 of 3 | Showing 1 - 15 of 40 results

Top Rated Products

DriveWire Before Catalytic Converter Oxygen Sensors, 4-wire, 4 Cyl., 2.3L Engine, B1S1
$38.99( Review)
So far so good. It's too early to tell in the long run how the 02 sensors will work,See More
Ronald O.
VERIFIED PURCHASER
DriveWire Before Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, 4 Cylinder, 2.3L Engine, B1S1
$19.99( Review)
Don’t have this car anymore
Chasity C.
VERIFIED PURCHASER

Popular Products

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.