.jpeg?q=90&p=thumb&w=200&h=200)
.jpeg?q=90&p=thumb&w=40&h=40)
Brakes 
Driveline 
Electronics 
Handlebars & Controls 
Package Deals 
Wheel Accessories 
Wheels by Vehicle 
Tools and Maintenance 
Universal & Repair 
Vivid Racing Gear
See more parts for Ford Bronco
Select the year of your Ford Bronco:
Yukon Grizzly Locker YGLF9-31-LB: Unmatched Performance for Your Ford
If you're serious about off-roading or want to enhance your vehicle's traction during high-performance driving, the Yukon Grizzly Locker YGLF9-31-LB is a must-have upgrade. This mechanical positive-locking differential is designed specifically for Ford vehicles equipped with a 9" axle and 31 spline axles, making it an ideal choice for enthusiasts looking to tackle everything from rock crawling to drag racing.
Why Choose the Yukon Grizzly Locker?
The Grizzly Locker is engineered for durability and performance, featuring an advanced gear tooth design that maximizes traction. With this locker, you’ll get 100% power sent to both tires, ensuring that you can conquer tough terrains without losing momentum. The innovative design allows for disengagement while turning, which means you won’t have to compromise on handling when navigating tight corners.
Key Features:
- Designed to fit Ford 9" with 31 spline axles and load bolt housing
- Patented internal design helps reduce common locker failures
- Made with 8620 steel internals for superior strength
- Assembled in the USA for quality assurance
Technical Specifications:
- Axle Shaft Spline Quantity: 31
- Cover Bolt Quantity: 0
- Material: Steel
- Type: Locking
Fitment:
The Yukon Grizzly Locker is compatible with a wide range of Ford models, including:
- Ford Bronco (1966-1986)
- Ford E-100 (1975-1978)
- Ford F-100 (1957-1983)
- Ford F-150 (1975-1987)
- Ford Fairlane (1957-1970)
- Ford Falcon (1960-1970)
- Ford Galaxie (1959-1967)
- Ford Galaxie 500 (1968-1974)
- Ford Gran Torino (1972-1976)
- Ford Granada (1975-1979)
- Ford LTD (1967-1979)
- Ford Maverick (1970-1977)
- Ford Mustang (1965-1973)
- Ford Ranchero (1957-1979)
- Ford Thunderbird (1955-1979)
- Lincoln Continental (1961-1979)
- Lincoln Mark III (1969-1971)
- Mercury Comet (1964-1969 & 1971-1977)
- Mercury Cougar (1967-1979)
- Mercury Grand Marquis (1975-1978 & 1980)
Customer Feedback:
Many Ford F-150 owners have shared their experiences with the Grizzly Locker. One F-150 owner mentioned, "I installed the Grizzly Locker on my 1985 F-150, and it transformed my off-roading experience. The traction is incredible, and I can power through tough trails without any worries about losing grip." Another customer with a 1979 Ford Bronco said, "This locker made a huge difference in my Bronco's performance on the rocks. It’s tough, reliable, and I can't imagine going back to a standard differential."
Upgrade your Ford with the Yukon Grizzly Locker YGLF9-31-LB and experience the difference in traction and performance. Whether you're hitting the trails or the drag strip, this is the differential that can handle it all.
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1966-1986 Ford Bronco |
Bronco | 1966-1986 |
|
1975-1978 Ford E-100 Econoline |
E-100 Econoline | 1975-1978 |
|
1957-1983 Ford F-100 |
F-100 | 1957-1983 |
|
1975-1987 Ford F-150 |
F-150 | 1975-1987 |
|
1957-1970 Ford Fairlane |
Fairlane | 1957-1970 |
|
1960-1970 Ford Falcon |
Falcon | 1960-1970 |
|
1959-1967 Ford Galaxie |
Galaxie | 1959-1967 |
|
1968-1974 Ford Galaxie 500 |
Galaxie 500 | 1968-1974 |
|
1972-1976 Ford Gran Torino |
Gran Torino | 1972-1976 |
|
1975-1979 Ford Granada |
Granada | 1975-1979 |
|
1967-1979 Ford LTD |
LTD | 1967-1979 |
|
1970-1977 Ford Maverick |
Maverick | 1970-1977 |
|
1965-1973 Ford Mustang |
Mustang | 1965-1973 |
|
1957-1979 Ford Ranchero |
Ranchero | 1957-1979 |
|
1955-1979 Ford Thunderbird |
Thunderbird | 1955-1979 |
|
1961-1979 Lincoln Continental |
Continental | 1961-1979 |
|
1969-1971 Lincoln Mark III |
Mark III | 1969-1971 |
|
1964-1969, 1971-1977 Mercury Comet |
Comet | 1964-1969, 1971-1977 |
|
1967-1979 Mercury Cougar |
Cougar | 1967-1979 |
|
1975-1978, 1980 Mercury Grand Marquis |
Grand Marquis | 1975-1978, 1980 |
Yukon's mission is to build quality parts that exceed your expectations. We achieve this through state-of-the-art product design and an in-house engineering team. Our parts are then produced by leaders in OEM manufacturing and endure rigorous testing.
Yukon Gear & Axle ("Yukon") warrants the original retail purchaser that all Yukon products will be free from defects in materials and workmanship for the periods shown herein. Yukon makes no other warranty of any kind, express or implied. All other warranties, including but not limited to an implied warranty of merchantability or fitness for a particular purpose, are excluded. This warranty is offered provided that the Yukon product has been installed and maintained in accordance with Yukon instructions, and that it has not been subject to modification, accident, abnormal use or misuse. At Yukon's discretion, this warranty may be voided if installation of Yukon product(s) occurs on vehicles with tires that exceed Yukon Maximum Recommended Tire Size.
Upon notification of a warranty claim, Yukon shall investigate the claim of defect, and, in the event of a verified defect, shall, at their sole choice, either repair the defective product, replace it, or refund the purchase price.
This warranty does not cover, and Yukon shall not be liable for, incidental or consequential damages, including loss of time, road service charges, labor charges, inconvenience, loss of vehicle use, loss of revenues, or loss or damage to personal property (including loss or damage to vehicle parts due to the failure of the Yukon product)*. In addition, this warranty does not cover, and Yukon shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Yukon Gear & Axle products, except where such agreements are within the provisions of this Warranty statement. Also, this warranty does not cover damage to the axle caused by or facilitated by failure of a non-Yukon component.
This agreement offers you specific legal rights. You may also have other rights which vary from state to state.
YUKON WARRANTY BY PRODUCT
Spool
Upon notification of a warranty claim, Yukon shall investigate the claim of defect, and, in the event of a verified defect, shall, at their sole choice, either repair the defective product, replace it, or refund the purchase price.
This warranty does not cover, and Yukon shall not be liable for, incidental or consequential damages, including loss of time, road service charges, labor charges, inconvenience, loss of vehicle use, loss of revenues, or loss or damage to personal property (including loss or damage to vehicle parts due to the failure of the Yukon product)*. In addition, this warranty does not cover, and Yukon shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Yukon Gear & Axle products, except where such agreements are within the provisions of this Warranty statement. Also, this warranty does not cover damage to the axle caused by or facilitated by failure of a non-Yukon component.
This agreement offers you specific legal rights. You may also have other rights which vary from state to state.
YUKON WARRANTY BY PRODUCT
Spool
- Length:As long as original purchaser owns vehicle in which Spool is originally installed
- Notes:It is normal for Spools to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for Spool to function properly without premature wear.
- Length:As long as original purchaser owns vehicle in which Super Joint is originally installed
- Notes:Warranty coverage is for breakage of cross section or caps only. Failure by wear or galling is not covered.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturers defects.
- Length:Ten (10) Years
- Notes:Covers parts for ten years against manufacturing defects.
- Length:Ten (10) Years
- Notes:Covers parts for ten years against manufacturing defects.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
- Length:One (1) Year
- Notes:Warrantied against manufacturing defects for one (1) year.
- Length:One (1) Year
- Notes:Exclusions apply, does not cover premature clutch wear or abuse. It is normal for Positraction differentials to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for differential to function properly without premature wear. Limited slip additive or appropriate friction modifier must be used with oil to reduce Positraction chatter.
- Length:Six (6) Years
- Notes:All Zip Lockers come with a six (6) year warranty against manufacturer defect, including any collaterally damaged parts and associated labor, up to $2,000*, for the first two (2) years. Collaterally damaged parts must be submitted for inspection. Receipts for parts and associated labor must be submitted as well. Only claims deemed reasonable by Yukon Gear & Axle will be accepted. Offer may be discontinued without advance notice.
- Length:One (1) Year
- Notes:Covers the replacement of the unit and any collaterally damaged parts and associated labor, up to $2,000. Collaterally damaged parts must be submitted for inspection. Receipts for parts and associated labor must be submitted as well. Only claims deemed reasonable by Yukon Gear & Axle will be accepted. Offer may be discontinued without advance notice.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:Includes BK, MK, PK, and YK. Covers parts for one year against manufacturing defects.
- Length:One (1) Year
- Notes:One year against manufacturing defects. Exclusions apply, does not cover clutch wear in limited slip differentials.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace the part or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
- Length:Limited Lifetime
- Notes:Limited Lifetime warranty covering manufacturing defects and breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace the part or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations
- Length:One (1) Year
- Notes:Warrantied against manufacturing defects for one (1) year. Longer warranty is available through purchase of a Y.E.S. plan.
Installation Instructions
Click to view the Installation Instructions here
Check out these other great products
Error: Failed to add product
Please refresh the page and try again.