Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
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.
I bought the GM 3987920 speedometer driven gear to fix my transmission issue. It was easy to install and perfectly matched my vehicle's specs. Definitely improved my speedometer accuracy. Glad I found this part!
J
Jessica Li
Adequate but took a bit to arrive
The speedometer-driven gear works fine, but I was a little disappointed with the shipping time. It took longer than expected to get here. Once installed, it did resolve my speedometer's problems, so that's a plus.
A
Ahmed El-Hassan
Not what I hoped for
I received the GM speedometer gear, but it didn't fit my model as expected. I followed all instructions, but it just wouldn’t work. Now I have to look for a different solution. Disappointing experience overall.
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FAQs
Have a question ? We are here to help.
Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
