

⚙️ Upgrade your GM with genuine precision — don’t settle for less!
The GM Genuine Parts 3860347 Gear is a precision-engineered, USA-made replacement part designed to meet original equipment specifications. Crafted from durable Delrin material, it guarantees a perfect fit and reliable performance for GM vehicles, backed by a 24-month unlimited mile warranty for lasting peace of mind.





| ASIN | B0016I0LQS |
| Best Sellers Rank | #708,732 in Automotive ( See Top 100 in Automotive ) #42 in Automotive Replacement Automatic Drive Gear Bearings |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Customer Reviews | 4.5 out of 5 stars 98 Reviews |
| Global Trade Identification Number | 00036666069853 |
| Included Components | ACDelco - Automatic Trans (Slp) (3860347) |
| Item Dimensions | 2.8 x 1.5 x 1.1 inches |
| Item Type Name | ACDelco - Automatic Trans (Slp) (3860347) |
| Item Weight | 4.54 g |
| Item dimensions L x W x H | 2.8 x 1.5 x 1.1 inches |
| Manufacturer | AC Delco |
| Material | Delrin |
| Material Type | Delrin |
| UPC | 036666069853 |
| 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. |
D**Y
works well
fit good and worked
A**A
Good value
worked well, good fit, Great alternative to OEM part, fast ship, packed well, would recommend to others.
W**S
TH350
Just what I needed for my TH350 with 3.73 gears 28.5 tall tires to correct my speedometer. Good seller, fast shipping! Thank You!
P**R
As advertised
Great part. Unfortunately I ordered the wrong tooth count
J**.
Five Stars
fit nicley quick delivery
M**J
If it works it's OK
Just a tip. This will not bring a Saginaw 4 speed around when as a replacement for a white 19 tooth gear. It installed easily but doesn't engage the drive gear. The speedo went dead. It's not fault of this gear. But I thought I would warn anyone who might think this can be dropped in a Saginaw to compensate for 3.73 gears without other internal transmission modifications. It won't work.
R**.
Worked perfect
Changed rear end gears in my 1973 camaro Th350 from 2.73 to 3.73. Quick fix that fixed the speedo.
G**.
Jumping speedometer
The molding left lines and it will make your speedometer jump.
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