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Yukon Gear & Axle YDGF8-31-SM Dura Grip Limited Slip Differential
The Yukon Gear & Axle YDGF8-31-SM is a robust positraction limited slip differential designed to enhance your vehicle's traction and performance across various terrains. Whether you're navigating city streets or tackling off-road challenges, this differential provides the smooth yet aggressive traction you need, instilling confidence in every drive.
Features
- Compatible with all gear ratios
- Designed for 8" Ford with 31 spline axles
- Fully rebuildable design, proudly assembled in the USA
- Equipped with composite clutches for reliable limited slip performance
- Thoroughly tested with advanced software to ensure quality and durability
- Features high-strength 4320 chromoly spider gears for maximum toughness
- 4-pinion design for enhanced stability and performance
- Smooth operation ideal for everyday driving
- Precision-cut gears for strength in any terrain
Specifications
- Assembled: Yes
- Axle Shaft Spline Quantity: 31
- Axle Type: Semi Floating
- Bolt Hole Quantity: 10
- Case Included: Yes
- Differential Brand: Ford
- Gear Ratio: All
- Heat Treated: Yes
- Material: Steel
Customer Feedback
"I installed the Yukon Dura Grip on my 1970 Mustang, and it's been a game changer. The traction is incredible, especially during hard turns. I love how smooth it feels on the road!" - Mark T.
"This differential has really held up under tough conditions. I’ve taken my Fairlane through some rough spots, and it performs flawlessly. Highly recommend!" - Lisa R.
Note on Fitment
The YDGF8-31-SM is specifically designed for various Ford models, including:
- Ford Fairlane 1962-1967
- Ford Fairmont 1978
- Ford Falcon 1964-1970
- Ford Gran Torino 1972-1976
- Ford Granada 1975-1978
- Ford LTD 1967-1978
- Ford Maverick 1970-1977
- Ford Mustang 1964-1973
- Ford Pinto 1971-1980
- Ford Ranchero 1964-1979
- Mercury Bobcat 1975-1980
- Mercury Comet 1962-1969 & 1971-1977
- Mercury Cougar 1967-1970
- Mercury Zephyr 1978
Upgrade your vehicle's performance with the Yukon Gear & Axle YDGF8-31-SM and experience the difference in traction and handling.
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1962-1967 Ford Fairlane |
Fairlane | 1962-1967 |
|
1978 Ford Fairmont |
Fairmont | 1978 |
|
1964-1970 Ford Falcon |
Falcon | 1964-1970 |
|
1972-1976 Ford Gran Torino |
Gran Torino | 1972-1976 |
|
1975-1978 Ford Granada |
Granada | 1975-1978 |
|
1967-1978 Ford LTD |
LTD | 1967-1978 |
|
1970-1977 Ford Maverick |
Maverick | 1970-1977 |
|
1964-1973 Ford Mustang |
Mustang | 1964-1973 |
|
1971-1980 Ford Pinto |
Pinto | 1971-1980 |
|
1964-1979 Ford Ranchero |
Ranchero | 1964-1979 |
|
1975-1980 Mercury Bobcat |
Bobcat | 1975-1980 |
|
1962-1969, 1971-1977 Mercury Comet |
Comet | 1962-1969, 1971-1977 |
|
1967-1970 Mercury Cougar |
Cougar | 1967-1970 |
|
1978 Mercury Zephyr |
Zephyr | 1978 |
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
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