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Yukon Gear 8.6in GM 4.56 Rear Ring & Pinion Install Kit, 30 Spline, Positraction, Bearings & Seals
Yukon Gear part YGK2019 is a complete re-gear kit for the GM 8.6in rear differential, combining a 4.56 ratio ring and pinion gear set with the matching Yukon Master Overhaul Kit -- including 30-spline positraction internals, bearings, and seals -- in a single part number. Yukon uses state-of-the-art design, advanced heat-treating, and leading-edge testing, backed by Yukon's Y.E.S. Plan lifetime protection.
Key Features
- Complete kit: ring and pinion gear set plus master overhaul kit in one part number
- 4.56 gear ratio for the GM 8.6in differential
- Includes 30-spline positraction internals
- Includes bearings and seals for a full rebuild
- Backed by Yukon's Y.E.S. Plan lifetime protection
Fitment
Fits vehicles equipped with the GM 8.6in rear differential and 30-spline axles. Confirm your exact differential and spline count before ordering.
Specifications
| Detail | Value |
|---|---|
| Manufacturer part number | YGK2019 |
| Application | GM 8.6in rear differential |
| Gear ratio | 4.56 |
| Spline count | 30 |
| Positraction included | Yes |
What's Included
- Ring and pinion gear set
- 30-spline positraction unit
- Master overhaul kit (bearings, races, seals, small parts)
About Yukon Gear
Yukon Gear & Axle manufactures differential, axle, and drivetrain components engineered for durable, precise-fit replacement and upgrade applications.
FAQ
What is included in this kit?This kit includes a 4.56 ratio ring and pinion gear set, a 30-spline positraction unit, and a complete Master Overhaul Kit with bearings, races, and seals.
What differential does this kit fit?This kit fits the GM 8.6in rear differential with 30-spline axles.
Do I need to buy anything else to complete my re-gear?No, this combo kit is designed to include everything needed for a complete gear and carrier rebuild in one part number.
What is the Y.E.S. Plan?Yukon's Y.E.S. Plan is a lifetime, comprehensive protection plan covering your gear set for as long as you own your vehicle.
Is professional installation recommended?Yes. Full differential rebuilds require precise backlash and pattern setup and should be performed by a qualified technician.
What is positraction?Positraction is a limited-slip differential system that improves traction by distributing power between both wheels.
Why would I choose a combo kit over separate parts?A combo kit saves time and ensures all components are matched correctly for your specific ratio and spline count.
Do I need to confirm fitment before ordering?Yes. Confirm your exact vehicle, differential, and spline count before ordering.
Installation Instructions
- Remove the differential cover and carrier assembly.
- Remove the old ring and pinion gears, carrier, and bearings.
- Install the new positraction unit, ring and pinion gears, bearings, and seals from this kit.
- Set backlash and verify the gear contact pattern, then torque all fasteners to specification.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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