Description of π§ ACDelco GM Genuine Parts 3987918: Reliable Automatic Transmission Speedometer Driven Gear
Designed, Engineered, Tested For GM Vehicles. The Package Height Of The Product Is 1.1 Inches. The Package Length Of The Product Is 2.9 Inches. The Package Width Of The Product Is 2.5 Inches.
. I had a 21 tooth gearbox and switched to this 18 tooth gearbox, the speedometer now reads within 3mph. To check, I used a GPS-based speedometer application on a smartphone.
My GMC van needs a mechanical speedometer drive, couldn't believe it. The color is very important as each of the many gears has a different number of teeth and the color determines the number of teeth. thanks, good job