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1991 Mercury Cougar

1991 Mercury Cougar Oxygen Sensors

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Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 6 Cyl 3.8L
Part Number: REPF960904
Guaranteed to Fit
$19.99
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L
  • 1991 Mercury Cougar LS 6 Cyl 3.8L
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L
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 Sensor, Set of 2, 4-wire, 6 Cyl 3.8L
Part Number: SET-REPF960904-2
Guaranteed to Fit
$38.99
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L
  • 1991 Mercury Cougar LS 6 Cyl 3.8L
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L
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
Upstream Oxygen Sensor, OE manufactured part, Sold individually, 4-wire, 8 Cyl 5.0L, OE Replacement Series - Upstream
Part Number: BS15716
Guaranteed to Fit
$36.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 6 Cyl 3.8L OE manufactured part
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L OE manufactured part
  • 1991 Mercury Cougar LS 8 Cyl 5.0L 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 : CarParts EuroSeries : OE Replacement Series
Before Catalytic Converter Oxygen Sensor, O.E. Quality Replacement Sensor, Sold individually, 4-wire, 6 Cyl 3.8L - Before Catalytic Converter
Part Number: NP2344610
Guaranteed to Fit
$34.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 6 Cyl 3.8L O.E. Quality Replacement Sensor
  • 1991 Mercury Cougar LS 8 Cyl 5.0L O.E. Quality Replacement Sensor
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L 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.

Oxygen Sensor, Sold individually
Part Number: AC213618
Guaranteed to Fit
$53.99
Vehicle Fitment
  • 1991 Mercury Cougar LS 6 Cyl 3.8L
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
Part Number: ACB88260001
Guaranteed to Fit
$66.66
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L
  • 1991 Mercury Cougar LS 6 Cyl 3.8L
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L
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.

Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 6 Cyl 3.8L, Walker Products Original Equipment Base Sensor - Before Catalytic Converter
Part Number: 25024001
Guaranteed to Fit
$43.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L
  • 1991 Mercury Cougar LS 6 Cyl 3.8L
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthInterchange Part Number : REPF960904Warranty : 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, 4-wire
Part Number: DELES20316
Guaranteed to Fit
$39.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L With 270mm Overall Length
  • 1991 Mercury Cougar LS 6 Cyl 3.8L With 270mm Overall Length
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L With 270mm Overall Length
Product Details
Type : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 10.63 in. Wire LengthThread Size : 18 x 1.5 mm Thread SizeInterchange Part Number : 15718Warranty : 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.

Upstream Oxygen Sensor, OE manufactured part, Sold individually, 4-wire, 6 Cyl 3.8L, OE Replacement Series - Upstream
Part Number: BS15729
Guaranteed to Fit
$38.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L OE manufactured part
  • 1991 Mercury Cougar LS 6 Cyl 3.8L OE manufactured part
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L OE manufactured part
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 29.7 in. Wire LengthInterchange Part Number : 15510Warranty : 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 : CarParts EuroSeries : OE Replacement Series
Before Catalytic Converter Oxygen Sensor, O.E. Quality Universal Replacement Sensor, Sold individually, 4-wire, 6 Cyl 3.8L - Before Catalytic Converter
Part Number: NP2344210
Guaranteed to Fit
$46.99
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L O.E. Quality Universal Replacement Sensor
  • 1991 Mercury Cougar LS 6 Cyl 3.8L O.E. Quality Universal Replacement Sensor
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L O.E. Quality Universal Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : 5L8Z9F472BA, 5L8Z9G444F, 5L8Z9G444K, 5M6Z9G444A, 5W6Z9G444BA, 8F9Z9F472B, 9E5Z9F472E, ZZC418861, ZZD118860, ZZD118861, ZZDA18861, ZZDM18861Warranty : 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 Oxygen Sensor, Sold individually, 4-wire, 6 Cyl 3.8L - Before Catalytic Converter
Part Number: NG22500
Guaranteed to Fit
$31.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L
  • 1991 Mercury Cougar LS 6 Cyl 3.8L
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L
Product Details
Location : Before Catalytic ConverterNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleInterchange Part Number : 2344609, ES20104Warranty : 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.

Oxygen Sensor, Sold individually, 4-wire, Walker Products Aftermarket Base Sensor
Part Number: WKP35034414
Guaranteed to Fit
$30.99
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L FI, Naturally Aspirated, GAS
  • 1991 Mercury Cougar LS 6 Cyl 3.8L FI, Naturally Aspirated, GAS
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic Converter, Driver or Passenger SideNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 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
Upstream Oxygen Sensor, Alternative Fit 1; OE manufactured part, Sold individually, 4-wire, 6 Cyl 3.8L, OE Replacement Series - Upstream
Part Number: BS15717
Guaranteed to Fit
$46.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L Alternative Fit 1; OE manufactured part
  • 1991 Mercury Cougar LS 6 Cyl 3.8L Alternative Fit 1; OE manufactured part
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L Alternative Fit 1; OE manufactured part
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : CA0918861, F1UZ9F472B, F4AZ9F472B, F4ZZ9F472B, GU2Z9G444A, XR81557Interchange Part Number : 2344609, ES20104, CA0918861, F1UZ9F472B, F4AZ9F472B, F4ZZ9F472B, GU2Z9G444A, XR81557Warranty : 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 : CarParts EuroSeries : OE Replacement Series
Before Catalytic Converter Oxygen Sensor, Sold individually, 4-wire, 8 Cyl 5.0L
Part Number: JF960904
Guaranteed to Fit
$25.99
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L
  • 1991 Mercury Cougar LS 6 Cyl 3.8L
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L
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 JC Whitney 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, FI, Naturally Aspirated, GAS, Set of 2, 4-wire, 6 Cyl 3.8L
Part Number: SET-JF960904-2
Guaranteed to Fit
$49.49
Vehicle Fitment
  • 1991 Mercury Cougar LS 8 Cyl 5.0L FI, Naturally Aspirated, GAS
  • 1991 Mercury Cougar LS 6 Cyl 3.8L FI, Naturally Aspirated, GAS
  • 1991 Mercury Cougar XR-7 8 Cyl 5.0L 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 SizeConnector Gender : Male ConnectorWarranty : 1-year JC Whitney 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
Page 1 of 2 | Showing 1 - 15 of 27 results

Top Rated Products

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
Fit just right works good
Jeffrey L S.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

Q:Is the upstream and down stream the sae sensor?
Michael S.
A:BEST ANSWERHi Mike, I'm glad to assist you. This works as both the upstream and downstream. I hope this helps, and if you're interested in this oxygen sensor, you can click on the link below for direct ordering to take advantage of our ongoing sale and limited stocks. Happy shopping. https://www.carparts.com/oxygen-sensor/bosch/bs15717?can=CPAE1047 Show less
Arnel E.
 
5 Questions, 1 AnswerView all Q&As >