

🚗 Gear up your GM ride with precision power and legendary durability!
The Motive Gear GM10-342A Differential Ring & Pinion Set is a precision-engineered drivetrain upgrade featuring a 3.42 gear ratio and 30-spline, 10-bolt fitment. Constructed from heat-treated 8620 steel, it delivers superior strength, smooth torque transfer, and long-lasting durability. Compatible with a wide range of GM vehicles from 1970-2020, this OE direct-fit set ensures easy installation and is backed by a 1-year/50,000-mile warranty, making it the trusted choice for performance and reliability.






















| ASIN | B000S6BW4E |
| Best Sellers Rank | #651,898 in Automotive ( See Top 100 in Automotive ) #110 in Automotive Replacement Differential Rings & Pinions |
| Brand | Motive Gear |
| Customer Reviews | 4.5 4.5 out of 5 stars (38) |
| Date First Available | June 19, 2007 |
| Exterior | Machined |
| Item Weight | 17.7 pounds |
| Item model number | GM10-342A |
| Manufacturer | Motive Gear |
| Manufacturer Part Number | GM10-342A |
| Model | Motive Gear GM10-342A Differential Ring and Pinion |
| OEM Part Number | GM10-342A |
| Product Dimensions | 15.5 x 11 x 5.25 inches |
J**E
Worth it.
About 50 smoke shows and 7,000 miles. Everything good so far.
S**O
Great fit
Works as it should, and described correctly. I recommend
C**T
Easy going!
Just finished my rear end with these gears. My pinion shim was gone since the last pinion gear welded it to the bearing so I had to Guess at about .029 and it turned out pretty good! Set at around 21 lbs of preload and about .007 of backlash with the original carrier shims. So far so good! Heel and toe were north and south but in the middle of the line so I’m rolling with it. did also used the proper oil for break in of 80w-90! Great buy at a great price
C**O
Great product
Perfect description fit great
M**N
Good value
No issues, half the price of local suppliers, fit my 1990 Silverado
V**S
Ok
Good
J**J
Motive Gear GM10-342A
Good stock replacement gear set
J**.
Not to oem specs.
Tooth width to large. Teeth Are weaker and thinner than factory. oem. Therefore to many shims required to get proper gear set. And the bearing is 70+ Each time. plus fluid ..again. not good. Need a refund.will have to go to dealership it seems...$$$
S**R
Fit like it should works great!
Trustpilot
2 weeks ago
5 days ago