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ACDelco 3987918 GM Original Equipment Automatic Transmission Speedometer Driven Gear

Free shipping on orders over $29.99

$14.90

$ 6 .99 $6.99

In Stock

About this item

  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM Original Equipment specifications for fit, form, and function


ACDelco GM Original Equipment Speedometer Drive Gear is mounted on the transmission output shaft. The speedometer drive gear meshes with the driven gear, which connects to the speedometer cable and mechanical speedometer. This original equipment speedometer gear has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.


Customer
Reviewed in the United States on July 31, 2022
End of speedo cable that hooks into 700-4 transmission on my S-10 chassis. Gear was stripped and that turns the speedometer in the truck.
E. Pietzsch De Rossi
Reviewed in the United States on December 20, 2018
Now my speedo on my Cobra shows the right speed. Got two gears instead of one. Well , have a spare now.
Nathan
Reviewed in the United States on October 3, 2016
My speedo in my 1972 Corvette read about 10mph fast. I had a 21 tooth gear and went to this 18 tooth gear, speedo now reads within 3mph. Used a GPS based speedometer app on a smart phone to test.
david Holloway
Reviewed in the United States on May 30, 2015
Worked great. Direct replacement of oem
Mark Harrison
Reviewed in the United States on November 25, 2015
Works good.
Lo
Reviewed in the United States on August 28, 2014
acdelco 3987918 drive gear was the gear I need
Coyoteeman
Reviewed in the United States on February 11, 2012
My GMC Van needs a mechanical speedometer driven gear, Couldn't believe it....there it was....Same color and all...wow... The color is very important 'cause each of the many gears has differnt number of teeth and the color determines the number of teeth. Thanks good job