SKU: YGLD30-4-27 | UPC: 883584280002
Yukon Gear Grizzly Locker For Dana 30 / 27 Spline / 3.73+
The Yukon Grizzly Locker is a mechanical positive-locking differential engineered for Dana 30 axles with 27 splines and 3.73 or higher gear ratios. It fits Jeep Wrangler Cherokee CJ Bronco International Scout and select Volvo models delivering maximum traction in rock crawling trail running off-road racing and drag racing. This patented design sends 100% power to both tires while disengaging on turns to avoid binding.
Key Features
- Hardcore Construction: Heavy-duty casing and gears built to withstand extreme off-road abuse
- Advanced Gear Teeth: Larger radius at base of inner clutch teeth for up to 350% greater strength than back-cut designs
- Shock-Load Resistance: Oversized teeth prevent breakage from shock-loading or axle failure
- Full Power Delivery: Locks both wheels for 100% traction in demanding conditions
- Turn Disengagement: Automatically unlocks during turns for smooth handling
Product Notes
- Confirm gear ratio is 3.73 or numerically higher and 27 spline axles before installation
- Uses existing carrier bearings and hardware
- Packed in protective foam-lined box for safe transit
Installation Notes
- Professional installation recommended.
- Requires complete differential disassembly and gear setup
- Compatible with factory Dana 30 carriers in listed vehicles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1966-1971 | Ford | Bronco | Base |
| 1968-1969 | Ford | Bronco | Roadster |
| 1968-1971 | Ford | Bronco | Wagon |
| 1967-1971 | International | Scout | Base |
| 1971-1974 | International | Scout II | Base |
| 1984-1993 | Jeep | Cherokee | Base |
| 1991-1992 | Jeep | Cherokee | Briarwood |
| 1985-1988 | Jeep | Cherokee | Chief |
| 1996 | Jeep | Cherokee | Classic |
| 1998-2001 | Jeep | Cherokee | Classic |
| 1993-1997 | Jeep | Cherokee | Country |
| 1985-1992 | Jeep | Cherokee | Laredo |
| 1987-1992 | Jeep | Cherokee | Limited |
| 1985-1990 | Jeep | Cherokee | Pioneer |
| 1994-2001 | Jeep | Cherokee | SE |
| 1989-2001 | Jeep | Cherokee | Sport |
| 1977-1979 | Jeep | CJ7 | Golden Eagle |
| 1980 | Jeep | CJ7 | Golden Hawk |
| 1980-1983 | Jeep | CJ7 | Laredo |
| 1985-1986 | Jeep | CJ7 | Laredo |
| 1982-1983 | Jeep | CJ7 | Limited |
| 1976-1986 | Jeep | CJ7 | Renegade |
| 1976-1986 | Jeep | CJ7 | Base |
| 1987-1992 | Jeep | Comanche | Base |
| 1987-1988 | Jeep | Comanche | Chief |
| 1986 | Jeep | Comanche | Custom |
| 1990-1992 | Jeep | Comanche | Eliminator |
| 1987-1988 | Jeep | Comanche | Laredo |
| 1987-1992 | Jeep | Comanche | Pioneer |
| 1986 | Jeep | Comanche | X |
| 1986 | Jeep | Comanche | XLS |
| 1987-1993 | Jeep | Wrangler | Base |
| 1988-1992 | Jeep | Wrangler | Islander |
| 1987-1990 | Jeep | Wrangler | Laredo |
| 1991-1994 | Jeep | Wrangler | Renegade |
| 1995 | Jeep | Wrangler | Rio Grande |
| 2003-2017 | Jeep | Wrangler | Rubicon |
| 1988 | Jeep | Wrangler | S |
| 1991-1994 | Jeep | Wrangler | S |
| 1988-1995 | Jeep | Wrangler | Sahara |
| 1997-2004 | Jeep | Wrangler | Sahara |
| 2007-2017 | Jeep | Wrangler | Sahara |
| 1994-1995 | Jeep | Wrangler | SE |
| 1997-2006 | Jeep | Wrangler | SE |
| 1987-1988 | Jeep | Wrangler | Sport |
| 1997-2006 | Jeep | Wrangler | Sport |
| 2010-2017 | Jeep | Wrangler | Sport |
| 2006 | Jeep | Wrangler | 65th Anniversary Edition |
| 2011 | Jeep | Wrangler | 70th Anniversary |
| 2016 | Jeep | Wrangler | 75th Anniversary |
| 1971-1983 | Jeep | CJ5 | Base |
| 1977-1980 | Jeep | CJ5 | Golden Eagle |
| 1980-1983 | Jeep | CJ5 | Laredo |
| 1982-1983 | Jeep | CJ5 | Limited |
| 1975-1983 | Jeep | CJ5 | Renegade |
| 1966-1975 | Jeep | CJ6 | Base |
Why Choose Yukon Gear?
- Proven leader in off-road differentials and axles
- Patented designs for real-world durability
- Precision-machined components for reliable performance
Frequently Asked Questions
-
Q: Will this fit my 1987-1995 Jeep Wrangler with Dana 30 front axle?
A: Yes it fits all listed Jeep Wrangler models with 27 spline Dana 30 and 3.73+ gears including Base S Sahara Sport -
Q: What materials are used in the Grizzly Locker?
A: High-strength steel gears and case with advanced tooth geometry for maximum impact resistance -
Q: What is the warranty on this locker?
A: Backed by Yukon's limited manufacturer warranty covering defects in materials and workmanship
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure foam-lined cardboard box 12in x 12in x 12in
- Weight: 24 lbs shipping weight
Differentials
Performance differentials, limited-slip differentials, locking differentials, and traction upgrades are stocked at Black Ops Auto Works. Shop clutch-type LSDs, helical gear LSDs, automatic lockers, selectable air lockers, electronic lockers, spool-style race components, differential carriers, truck and Jeep lockers, import performance LSDs, and axle-specific units for Subaru WRX and STI, Nissan Z and Skyline, BMW M, Mazda Miata, Porsche, Ford 8.8, Dana axles, GM trucks, Ram trucks, and off-road builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 235 differential SKUs across limited-slip designs, locking systems, axle spline counts, carrier cases, street and track traction upgrades, off-road configurations, and drivetrain-specific fitment. What This Differential Collection Covers A differential splits torque between driven wheels while allowing different wheel speeds through ...
View Differentials Products
Differentials & Components
Differentials and components at Black Ops Auto Works include diff braces, diff covers, rebuild and overhaul kits, differential bushings and mounts, limited-slip differentials, yokes, and final drive gears built for street, towing, off-road, and racing applications. Black Ops Auto Works carries 1,332 drivetrain SKUs from Yukon Gear and Axle, ARB, OS Giken, SuperPro, and Per4mance Development, spanning Hellcat and Trackhawk platforms, trucks, Jeep Wrangler, and sport compacts. What This Collection Covers This collection combines fifteen related differential and drivetrain categories, including diff braces, diff covers and gaskets, rebuild and overhaul kits, install kits, seal kits, bushings, mounts, housings, dropouts, spider gears, yokes, complete differentials, and final drive gears. Product Types in This Collection Shoppers will find billet differential braces for high-horsepower RWD platforms, nodular iron and aluminum diff covers, master overhaul kits, differential-to-cradle ...
View Differentials & Components Products
Drivetrain
Drivetrain parts for high-horsepower Mopar, truck, Jeep, and import platforms are stocked at Black Ops Auto Works. Shop differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, and driveline hardware for Hellcat, Trackhawk, TRX, HEMI, LS, LT, Coyote, and turbocharged import platforms. Every drivetrain part is filterable by vehicle platform, drivetrain layout, transmission type, and power level so the correct part ships the first time. Black Ops Auto Works carries 4,765 drivetrain SKUs across differentials, axles, clutches, and transmission hardware. What This Category Covers The drivetrain transfers power from the engine to the wheels and includes the transmission, clutch, driveshafts, axles, differentials, ring and pinion gears, wheel hubs, wheel bearings, U-joints, shifters, mounts, and bushings. Upgrading these components improves power delivery, durability, and reliability under incr...
View Drivetrain Products
Yukon Gear & Axle
Yukon Gear and Axle drivetrain parts are stocked at Black Ops Auto Works for GM, Ford, Chrysler, Ram, and Jeep platforms. Shop ring and pinion sets, positraction and locker units, axle overhaul kits, differential covers, driveshafts, and manual transmission rebuild components for Dana 60/61, GM 8.2/8.5/8.6/9.5, Ford 8.8/9/10.25/10.5, and Chrysler 8.25/9.25 inch axles. Yukon parts are proven in extreme-duty use, including King of the Hammers and Moab rock crawling events, and every part here is filterable by axle size, gear ratio, and spline count. Black Ops Auto Works carries 1122 Yukon Gear and Axle SKUs across ring and pinion, differential, and axle rebuild categories. What This Brand Covers Yukon Gear and Axle builds ring and pinion sets, differential carriers, positraction and locking differentials, axle shafts, bearing and seal kits, driveshafts, and manual transmission rebuild components for domestic trucks, SUVs, and Jeeps. The brand is best known for supporting extreme-d...
View Yukon Gear & Axle Products


