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NTK Performance Oxygen Sensor (94-04 V8; 95-09 V6)

Item 64045
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      Review & Installation Video

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Regain Lost Power
      • Direct OEM Style Replacement
      • Plug and Play to Factory Harness
      • Sold Individually
      • Front: 94-95 GT and Cobra
      • Rear: 95-09 V6, 94-04 GT, 03-04 Mach 1, 01 Bullitt, 94-04 Cobra


      Regain Lost Power. A bad oxygen (aka O2) sensor can cause poor performance, lousy fuel economy, the dreaded check engine light, and even cause you to fail emissions testing. So replace those worn out sensors with brand new NTK sensors for superior, consistent performance.

      Exceeds OEM Quality. Designed with a waterproof factory-fitted connector to ensure a perfect fit every time, NTK's oxygen sensors meet or exceed OE specifications and are built with the highest quality materials and craftsmanship to ensure a superior quality direct replacement for your worn or failed OEM sensors.

      Application. This NTK Performance Oxygen Sensor is designed to be a direct performance replacement for the Mustang. please see the NTK Performance Oxygen Sensor applications below:

      Front (upstream):
      • 1994 to 1995 GT Mustangs
      • 1994 to 1995 Cobra Mustangs

      Rear (downstream):

      • 1995 to 2009 V6 Mustangs
      • 1994 to 2004 GT Mustangs
      • 1994 to 2004 Cobra Mustangs
      • 2001 Bullitt Mustangs
      • 2003 to 2004 Mach 1 Mustangs

      Fitment: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Details

      MPN# 22500

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (88)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 88 customers

      • December 06, 2019

        5 1998 GT - JonathanR

        Great product

        Product fit perfectly. 15 min installation. Direct fit and help the idle issues I was having.

        Helpful (0)
      • August 07, 2019

        5 2009 V6 - Tony96

        Great product

        It works well, easy to install, no more check engine light

        Helpful (1)
      • June 17, 2019

        5 1994 GT - DavidA

        O 2

        Fast install less than 30 min fortunate came off easy. I didnt used any special tool just a 22mm combination wrench and some lubricant thats all very satisfied. I recommended.

        Helpful (0)
      • June 13, 2019

        5 1999 Cobra - ND99cobraguy

        Works great

        If you think you have any issues with o2s at all replace them these worked great for me

        Helpful (0)
      • June 09, 2019

        5 2001 Bullitt - Aspencade

        Worked great

        I had no troubles installing the sensor and it worked great.

        Helpful (0)
      • January 31, 2019

        5 2002 GT - RogerL


        Working fine! Easy installation, liked the caps on the threads with gease.

        Helpful (1)
      • January 26, 2019

        5 2001 Bullitt - VaRocker

        NTK Performance Oxygen Sensor

        I had these installed with new X pipe. No check engine light.

        Helpful (1)
      • January 10, 2019

        5 2002 GT - RogerL Installation Time: Less than 1 Hour

        O Sensor

        Like the fact that the threads were greased and had a protective cap on it!

        Helpful (2)
      • January 08, 2019

        5 2006 V6 - AprilE

        good retailer

        Product seems to be working but my engine light is still on so my husband says we need to replace the other 2 as we only replaced 2

        Helpful (2)
      • January 07, 2019

        5 1997 GT - RonH

        J's 97

        Installed with a new pypes catted x pipes and SLP Loudmouth ll exhaust and they worked perfectly.

        Helpful (2)

      Questions & Answers (25 answers)

      5 Top Rated Questions

      How many O2 sensors? How many front and rear O2 sensors would I need for a 98 V6 Mustang? Please help!

      • Eduardo, There are a total of 4 oxygen sensors for your model. There are 2 upstream of the catalytic converters and 2 downstream of the catalytic converters. If you don't have catalytic converters installed (i.e. you installed a off-road H-pipe or X-pipe), you will need to purchase the MIL eliminators to "trick" the computer or your check engine light will come on.

      Helpful (4) Show 4 more answers

      I have a 2005 V6 and want to replace all 4 sensors will this fit?

      • The NTK Performance Oxygen Sensor - Front (94-95 5.0L) - Rear (95-09 V6; 94-04 4.6L) will fit the 2005 V6 mustang how it will only fit for the rear sensors. You will need NTK Performance Oxygen Sensor - Front (99-09 V6; 99-04 4.6L) item number 64044 for the front.

      Helpful (3)

      I have a 2007 V6 and I want to replace all O2 sensors. How many do I need?? front and back? and will this one fit only rear or both?

      • This NTK Performance Oxygen Sensor will replace your downstream (rear) O2 sensors, of which you will have 2. The NTK Performance Oxygen Sensor linked below will replace your upstream (front) O2 sensors, of which you will also have 2.

      Helpful (2)

      How many 02 sensors does a 2001 Mustang V6 have and where are they located at?

      • The are four sensors. There are two before the cats, and two behind them, on each the driver and passenger side.

      Helpful (0)

      The instructions provide different torque specification for M12 and M18 sensor. How do I know if this sensor is M12 or M18?

      • This is a M18.

      Helpful (0)
      10 More Questions
      Where are the o2 sensors located on a 99 v6 mustang? And which ones are upstream and downstream 1 answer
      What is the warranty on it. 1 answer
      I have long tube headers with a off road xpipe and or no cats. Do i need the rear o2 sensers since they supposidly just read the air fuel to see if cats are working wich they arent there and will throw the code... Or would i be just as good getting 2 front o2 sensors and pluging the rear? I have none hooked up as of now... I know front 2 will make a difference but i dont think rears will. I could save the money for the screamin deamon coil pack and a tuner.... 1 answer
      I'm wondering, there are four wires on this sensor, two white and two grey. If installing on the rear, to which factory wires do the o2 sensor wires correspond to. I'm asking because the HEGO connector from the factory harness is broken off. 1 answer
      My diagnostic report says my 02 is biased/stuck rich on bank 2 sensor 1 same for bank 1 sensor 1. Question: What is bank 1, bank 2 and where is sensor 1? does this mean the front ones on both sides? 1 answer
      I have a 2001 mustang, how many Oxygen Sensor's does it have. 2 or 4? 1 answer
      What is the thread size? 1 answer
      How many 02 sensors are on my 2002 mustang GT 4.6LV8 1 answer
      I need oxygen sensor left rear bank will this work for this or can you recommend the right sensor 1 answer
      Can this be used as a front and rear oxgen sensor on my 1994 mustang 5.0 gt 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Oxygen Sensor

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 01
      • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04
      • Cobra R - 95, 00
      • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
      • Mach 1 - 03, 04
      • V6 - 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09

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