Yukon Dana 30 Grizzly Locker - 27 Spline, 3.73 & Up Ratio
YUKYGLD30-4-27
The Dana 30 Grizzly Locker is a fully mechanical automatic locking differential designed to deliver maximum traction for rock crawling, trail riding, off-road racing, overlanding, and high-performance street applications. When traction is limited, the Grizzly Locker automatically transfers 100% of available torque to both axle shafts, helping keep your vehicle moving through mud, rocks, sand, snow, and uneven terrain.
Built with a heavy-duty case and 8620 heat-treated internal components, the Grizzly Locker is engineered to withstand severe shock loads from oversized tires, aggressive driving, and demanding off-road conditions. This model is designed specifically for Dana 30 differentials equipped with 27 spline axle shafts and 3.73 & numerically higher gear ratios. The carrier is double drilled for both 3/8" and 7/16" ring gear bolts, providing compatibility across a wide range of Dana 30 applications.
Includes:
- Dana 30 Grizzly Locker assembly
- Internal locking mechanism
- Fully assembled carrier unit
Specifications
- Brand: Yukon Gear & Axle
- Part Number: YGLD30-4-27
- Product Type: Automatic mechanical locker
- Application: Dana 30 differential
- Spline Count: 27 spline
- Carrier Break: 3.73 and numerically higher ratios
- Ring Gear Bolt Compatibility: 3/8" and 7/16"
- Internal Material: Heat-treated 8620 alloy steel
- Locking Style: Automatic mechanical locking differential
- Assembly: Fully assembled
- Country of Assembly: USA
- Quantity: Sold individually
Fitment
|
Year |
Make |
Model |
Differential |
|
1980-1988 |
American Motors |
Eagle |
Dana 30 Front |
|
1986-1989 |
Ford |
Aerostar |
Dana 30 Rear |
|
1966-1971 |
Ford |
Bronco |
Dana 30 Front |
|
1967-1974 |
International |
Scout 800, Scout II |
Dana 30 Front |
|
1984-2001 |
Jeep |
Cherokee |
Dana 30 Front |
|
1971-1983 |
Jeep |
CJ5 |
Dana 30 Front & Rear |
|
1966-1975 |
Jeep |
CJ6 |
Dana 30 Front & Rear |
|
1976-1986 |
Jeep |
CJ7 |
Dana 30 Front |
|
1986-1992 |
Jeep |
Comanche |
Dana 30 Front |
|
1967-1973 |
Jeep |
Commando |
Dana 30 Front & Rear |
|
1993-1998 |
Jeep |
Grand Cherokee |
Dana 30 Front |
|
1984-1993 |
Jeep |
Grand Wagoneer |
Dana 30 Front |
|
1981-1986 |
Jeep |
Scrambler |
Dana 30 Front |
|
1971-1973 |
Jeep |
Wagoneer |
Dana 30 Front |
|
1987-2017 |
Jeep |
Wrangler |
Dana 30 Front |
|
1970-1993 |
Volvo |
142, 144, 164, 240, 242, 245, 265 |
Dana 30 Rear |
Fitment Notes
- Fits Dana Spicer 30 differentials with 27 spline axle shafts
- Compatible with 3.73 and numerically higher gear ratios
- Double drilled for both 3/8" and 7/16" ring gear bolts
- Commonly found in Jeep CJ, YJ, TJ, XJ, ZJ, JK Non-Rubicon, Scout, Bronco, Eagle, and Volvo applications
- Verify axle spline count, carrier break, and ring gear bolt size before ordering
Tech Insight
1. What gear ratios does this Grizzly Locker fit?
This locker is designed for Dana 30 carrier breaks using 3.73 and numerically higher gear ratios.
2. Will this fit a Jeep Wrangler TJ?
Yes. This locker fits many Jeep Wrangler TJ Dana 30 front axle applications equipped with 27 spline axle shafts.
3. Does this locker require air, wiring, or switches?
No. The Grizzly Locker is fully mechanical and operates automatically without compressors, switches, wiring, or electronics.
4. What ring gear bolt sizes does this locker accept?
This carrier is double drilled to accept both 3/8" and 7/16" ring gear bolts.
5. Is the Grizzly Locker good for rock crawling?
Yes. The Grizzly Locker is one of the most popular automatic lockers for rock crawlers because it delivers full traction automatically and is designed to withstand severe off-road abuse.
