Speedo Gear - 21 Tooth (83-98 Automatic)

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

Ford Motorcraft Mustang Parts
Genuine Ford Motorcraft replacement parts are now available at AmericanMuscle for your 1979 to 2010+ Mustang. Whether you have a V6, a GT, or even ...... READ MORE
OUR PRICE$7.99
Market Price $9.99You Save 20% ($2.00)
Item # 53685
Ships the same business day

Product 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
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

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


Installation Time:

(approx) 45 Minutes

Difficulty Level:

Advanced mechanical skills required.

What's in the box?

Hardware included:
  • (1) Speedo Gear
  • (1) Retaining Clip

What's in the box?

Hardware included:
  • (1) Speedo Gear
  • (1) Retaining Clip
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Fitment:
  • V6 94, 95, 96, 97, 98
  • GT 94, 95, 96, 97, 98
  • Foxbody 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
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Known Exceptions:
For use with Mustangs equipped with a automatic transmission.

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