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Ford Speedo Gear - 21 Tooth (83-98 Automatic)

15 Reviews
Our Price

$14.99

  • Item #53685
  • MPN#C1DZ-17292-A

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  • Market Price $17.99
  • You Save 17% ($3.00)
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Customer Photos
Features
  • Corrects Speedometer for Gear Changes
  • Purple - 21 Tooth Speedo Gear
  • Genuine Ford Part
  • Ford Part# D0OZ-17271-B
  • Speedo Gear Retaining Clip Included
  • Fits 1983-1998 Mustangs with a Automatic Transmission
Description
Corrects Speedometer. Changing the rear gears in your Mustang is great for performance, but it will also throw off your speedometer. Now you can correct your speedometer readings with a Genuine Ford Speedo Gear from AmericanMuscle.

Ford Motorcraft Quality. When adding performance parts to your Pony, trust the folks that know it best to provide top quality components that are made to out perform and out last the competition.

Application. This Genuine Ford 21 Tooth (Purple) Speedometer Gear is for use with 1983 to 1998 Mustangs equipped with a automatic transmission that have changed gear ratios to accurately correct MPH reading of your speedometer. A speedo gear retaining clip is included.


Speedometer Chart


Axle Ratio


6 Tooth Drive Gear


7 Tooth Drive Gear


8 Tooth Drive Gear
2.73 - 16 18
3.08 - 18 20
3.27 16 19 21
3.55 17 20 23
3.73 18 21 -
4.10 20 23 -
4.30 21 - -
4.56 23 - -


Transmission


16T


17T


18T


19T


20T


21T
Manual Wine White Yellow Pink Black Red
Automatic Blue Green Gray Tan Orange Purple


Manual Transmissions with 7 Tooth Drive Gear
  • 1983-1989 T-5 OEM
  • Pre 1993 T-5 Aftermarket
  • 1996-1998 Cobra T-45 OEM
  • All Tremec Transmissions


Manual Transmissions with 8 Tooth Drive Gear
  • 1990-1998 T-5 OEM
  • 1996-1998 T-45 OEM Except Cobra


Automatic Transmissions with 7 Tooth Drive Gear
  • 1983-1989 Automatic Transmissions


Automatic Transmissions with 8 Tooth Drive Gear
  • 1990-1998 Automatic Transmissions

Fitment: 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 Details

What's in the Box
Hardware included:
  • (1) Speedo Gear
  • (1) Retaining Clip
Installation Info
Tech Specs

Manual Transmissions with 7 Tooth Drive Gear

  • 1983-1989 T-5 OEM
  • Pre 1993 T-5 Aftermarket
  • 1996-1998 Cobra T-45 OEM
  • All Tremec Transmissions

Manual Transmissions with 8 Tooth Drive Gear

  • 1990-1998 T-5 OEM
  • 1996-1998 T-45 OEM Except Cobra

Automatic Transmissions with 7 Tooth Drive Gear

  • 1983-1989 Automatic Transmissions

Automatic Transmissions with 8 Tooth Drive Gear

  • 1990-1998 Automatic Transmissions

Will it fit my Mustang?
  • Foxbody - 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • V6 - 94, 95, 96, 97, 98
  • GT - 94, 95, 96, 97, 98

For use with Mustangs equipped with a automatic transmission

Most Helpful Reviews

5/5
ford speedo gear.

The product is good; However it did not solve the problem.

Helpful (1)

5/5
21 tooth speedometer gear

I purchased one of American Muscles' 21 tooth speedometer gears for my 1997 mustang after i swapped differentials going from a 2.73 gear to a 3.27 gear. I wasn't sure which gear i would need to correct ...

Read More
Helpful (1)

Overall Rating 5 out of 5 stars
Read All 15 Reviews

Customer Photos (1) Submit Your Photo

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1 Questions / 1 Answers

Ask a Question

Compatible with '94 Auto GT? Will this correct the speedo on my '94 Mustang GT Auto? if not, which speedo gear is needed?

Nickers

  • Depends on which gear ratio you went with and what speedo drive gear your transmission has but definitely fits the automatic for your year pretty easy to install aswell

    italianstallion

    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

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Customer Reviews (15) Write a Review

Overall Rating 5.0

out of 5 stars




  • 5/5

    August 22, 2016

    ford speedo gear.

    The product is good; However it did not solve the problem.

    DaddyCool

    Year: 1996 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    September 20, 2015

    as advertised

    speed is accurate now, bought to adjust speed with new 3.73 gears

    chuckie1

    Year: 1991 Model: Other 'Stangs I have owned: 2 houston,tx

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    May 14, 2015

    21 tooth speedo gear for automatic

    I changed the rear ended gears in my 1988 5.0LX, the chart made selection of the correct gear simple. This gear fit perfect and installed very easy, and came with a new clip

    Jay

    Year: 1988 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 3 Edmonton, Albert

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 23, 2014

    Speedo Gear

    Fitment was really easy and only took me about 45 minutes. Definitely fix my speedo and made it dead accurate with my gps. Great product. Oh and really fast shipping. Thanks AM!

    italianstallion

    Year: 1998 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Fayetteville, GA, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    November 25, 2013

    easy installation

    The product worked great, easy application I received it quick and the application chart was accurate on choosing the correct gear.

    scotty47

    Year: 1991 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Waldorf, MD, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    September 10, 2013

    Solved my Speedo Issue

    Fast shipping, fit like a glove. Only took about 5 minutes to install and now I have an accurate speedo!

    Gramps2

    Year: 1988 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 West Chester Ohio

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    August 14, 2013

    easy install, easy fix

    Quick fix for your speedo. Installs in just minutes.

    jd89pony

    Year: 1989 Model: Other Driving Style: Show 'Stangs I have owned: 5+ Columbus, OH, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    May 21, 2013

    21 tooth speedometer gear

    I purchased one of American Muscles' 21 tooth speedometer gears for my 1997 mustang after i swapped differentials going from a 2.73 gear to a 3.27 gear. I wasn't sure which gear i would need to correct the speedometer, but their detailed explanation of what gear goes with which transmission and differential gear was the most helpful out of anywhere else i looked. I received the gear and it was in and working perfectly in ten minutes. I highly recommend this gear, it and American Muscle will save you allot of time and headaches.

    ryans97redstang

    Year: 1997 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 1 Martinsville, IN 46151, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 07, 2016

    Great

    Part worked great.......................................m

    speedo

    Year: 1991 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 5

    Helpful (0) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    October 18, 2013

    21 Tooth Gear

    A must have when changing the rear end gears of your automatic Mustang. Corrects the Speedometer dead on. Quick, easy installation. Not all shops carry these items, so its best to be ahead of the game and make sure you have every parts you need.

    Mike124

    Year: 1994 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 2 Saskatoon, SK, Canada

    Helpful (0) (1)

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