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⚙️ Upgrade your ride with GM Genuine Parts – where precision meets performance!
The GM Genuine Parts 3987918 Speedo Driven Gear is a factory-recommended replacement part designed to meet GM’s strict OE standards. Made from durable nylon, it ensures precise fit, reliable speedometer function, and long-lasting durability. Backed by a 24-month unlimited mile warranty, this gear offers professional-grade quality trusted by GM and preferred by discerning vehicle owners.
| ASIN | B000J6Z9TC |
| Best Sellers Rank | #793,765 in Automotive ( See Top 100 in Automotive ) #77 in Automotive Replacement Automatic Drive Gear Bearings |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Customer Reviews | 4.4 out of 5 stars 44 Reviews |
| Global Trade Identification Number | 00036666071368 |
| Included Components | ACDelco - Automatic Trans (Slp) (3987918) |
| Item Dimensions | 2.9 x 2.5 x 1.1 inches |
| Item Type Name | ACDelco - Automatic Trans (Slp) (3987918) |
| Item Weight | 9.07 g |
| Item dimensions L x W x H | 2.9 x 2.5 x 1.1 inches |
| Manufacturer | ACDelco |
| Material | Nylon |
| Material Type | Nylon |
| Model | 3987918 |
| Number of Items | 1 |
| Part Number | 03987918 |
| Thread Style | Npt |
| Thread Type | Npt |
| UPC | 036666071368 |
| Unit Count | 1.0 Count |
| Warranty Description | 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. |
A**K
Works as advertised
Came as a two-pack.
M**H
Perfect replacement exactly as original.
Perfect replacement. Arrived quickly and was an exact representation of the original part. Exactly what I needed.
H**R
Fixed the issue
Fixed the issue, good value
A**R
part knowledge
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.
N**N
Used a GPS based speedometer app on a smart phone to test
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.
C**N
Exactly What I Needed
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
E**I
just what I needed.
Now my speedo on my Cobra shows the right speed. Got two gears instead of one. Well , have a spare now.
L**O
Five Stars
acdelco 3987918 drive gear was the gear I need
Trustpilot
1 month ago
1 month ago