Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededMOTIVE GEARPART NUMBER: 683-GM12-373
Ring & Pinion Gears 8.875" 12-Bolt Ratio: 3.73
$23684
Ships on 12/17/2026
Lowest Price GuaranteeGM 8.875" 12-Bolt
- Ring & Pinion Gears
- Ratio: 3.73
- Teeth: 41-11
- Ring Gear Diameter: GM 8.875"
- Pinion Shaft Diameter: 1.438"
- Cover Bolts: 12
- Ring Gear Bolts: 12
Applications: - 1964-1981 GM 1/2-Ton Pickup
- 1969-1981 GM 3/4-Ton PickupNote: Fits 3.73 & higher case.
OEM-Quality Ring and Pinions
Motive Gear Ring & Pinion Gears are the differential's critical point of power transfer and one of the easiest performance modifications to complete on a vehicle. Motive's high-quality Ring & Pinion Gears are made from 8620 steel for superior strength and come in a range of ratios, making them excellent factory replacements for both on-street and off-road vehicles.
Part TypeRing and Pinion
Product LineMotive Gear Ring & Pinion Gears
BrandMOTIVE GEAR
Package Height5.3
Package Width11.4
Package Length15.3
Weight14.29 PG
Part CategoryPerformance Parts
Ring Gear RotationStandard
Ring Gear Tooth Quantity41
Differential Carrier Break3.73 and Higher
Cover Bolt Quantity12
Pinion Spline Count30
Ring Gear Material8620 Steel
Ring Gear Diameter8.875 in (225.4 mm)
Pinion Shaft Diameter1.438 in (36.5 mm)
Pinion Gear Tooth Quantity11
Axle TypeGM 8.875 in.
Ring Gear Bolt Quantity12
Part FitmentSemi Universal
Vendor Part NumberGM12-373
Package Qty1
Package TypeEA
Items You Need
![Black RTV, Temperature Resistant up to 625 Degrees F [3.8 oz. Tube]](https://www.jegs.com/images/mini_200/500/555/555-28035.jpg)
JEGS
Black RTV, Temperature Resistant up to 625 Degrees F [3.8 oz. Tube]
Part Number : 555-28035
$799$8.99
You Save$1.00
JEGS
Adjustable Magnetic Base 110 lb Magnet with On/Off lever
Part Number : 555-81615
$3299$36.99
You Save$4.00
![Limited Slip Additive [4oz Bottle]](https://www.jegs.com/images/mini_200/500/555/555-60120.jpg)
![Differential Pinion Depth Tool Setup Kit [Hard Anodized Aluminum Components]](https://www.jegs.com/images/mini_200/500/555/555-81655.jpg)
JEGS
Differential Pinion Depth Tool Setup Kit [Hard Anodized Aluminum Components]
Part Number : 555-81655
$10199$109.99
You Save$8.00
![75W-90 Multi-Purpose Synthetic Gear Oil [1 Quart]](https://www.jegs.com/images/mini_200/500/555/555-28050.jpg)
JEGS
75W-90 Multi-Purpose Synthetic Gear Oil [1 Quart]
Part Number : 555-28050
$1299$14.99
You Save$2.00
JEGS
Part Number : 555-28035
$799$8.99
You Save$1.00
JEGS
Part Number : 555-81615
$3299$36.99
You Save$4.00
ITEM YOU MAY ALSO CONSIDER
RICHMOND GEAR
Excel Ring & Pinion Gear Set GM 8.75" 12 Bolt Truck Ratio: 3.73
Part Number : 836-12BT373
$20986
![GM 12-Bolt Truck Ring & Pinion 8.875" Diameter Ring Gear [3.73 Ratio]](https://www.jegs.com/images/mini_200/500/555/555-60015.jpg)
JEGS
GM 12-Bolt Truck Ring & Pinion 8.875" Diameter Ring Gear [3.73 Ratio]
Part Number : 555-60015
$26999$308.99
You Save$39.00
RICHMOND GEAR
Part Number : 836-12BT373
$20986
Some parts are not legal for use in California or other states with similar laws / regulations
