SKU: YDGF9-31-SM | UPC: 883584260103
Yukon Gear Trac Loc For Ford 9in With 31 Spline Axles. Street Design - Fits 1957-1986 Ford Models
The Yukon Dura Grip positraction limited slip differential installs in Ford 9-inch axles with 31 spline axles providing smooth yet aggressive traction for street driving. Engineered for classic Ford trucks cars Broncos and Mustangs from 1957 to 1986 this LSD boosts confidence on varied road surfaces. Completely rebuildable construction ensures lasting performance in daily driven vehicles.
Key Features
- Positraction Design: Delivers tire-gripping power during acceleration and cornering without abrupt engagement for consistent street handling
- Rebuildable Structure: Allows servicing and maintenance to extend service life beyond stock differentials
- High Strength Nodular Case: Resists cracking under torque loads for reliable operation in performance builds
- Forged 4320 Chromoly Spider Gears: Provide precise gear meshing and durability under high horsepower applications
- Composite Clutches: Offer progressive slip control for smooth power transfer across dry and wet conditions
Product Notes
- Designed specifically for street use with 31 spline axles in Ford 9-inch housings
- Break-in required with proper gear oil additive for clutch pack bedding
- Ships in protective packaging weighing 24 lbs with dimensions 12 x 12 x 12 inches
Installation Notes
- Professional installation recommended.
- Requires compatible Ford 9-inch carrier and 31 spline axles verify spline count before purchase
- Use Yukon gear installation kit for bearings seals and shims if upgrading ring and pinion
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1957-1970 | Ford | Fairlane | 500 Base |
| 1966-1967 | Ford | Fairlane | 500XL |
| 1960-1970 | Ford | Falcon | Base |
| 1962 | Ford | Falcon | Deluxe |
| 1963-1970 | Ford | Falcon | Futura |
| 1957-1979 | Ford | F-100 | Base Custom Ranger |
| 1959-1967 | Ford | Galaxie | Base |
| 1961 | Ford | Galaxie | Club Victoria Starliner Sunliner Town Victoria |
| 1966-1974 | Ford | Bronco | Base Custom |
| 1965-1973 | Ford | Mustang | Base Shelby GT-350 GT-500 |
| 1967-1979 | Ford | Ranchero | Base Custom GT Squire |
| 1955-1979 | Ford | Thunderbird | Base |
| 1964-1973 | Mercury | Comet | Base |
| 1967-1979 | Mercury | Cougar | Base XR-7 |
| 1970-1976 | Ford | Gran Torino | Base |
| 1975-1986 | Ford | Bronco | Ranger XLT Eddie Bauer |
| 1969-1974 | Ford | E-100 Econoline | Club Wagon Custom |
| 1975-1983 | Ford | E-150 Econoline | Base Custom XL |
Why Choose Yukon Gear?
- Over 30 years crafting differentials for off-road and street performance
- Uses forged chromoly gears and nodular iron for torque handling
- Focuses on rebuildable designs for cost-effective long-term ownership
Frequently Asked Questions
-
Q: Does this fit my 1969 Ford Mustang with 9-inch rear?
A: Yes it fits 1965-1973 Ford Mustang models equipped with 31 spline axles in the Ford 9-inch differential housing -
Q: What materials are used in the clutches and gears?
A: Composite clutches provide smooth engagement paired with forged 4320 chromoly spider gears and nodular iron case -
Q: Is professional installation needed and what fluid to use?
A: Professional installation recommended use 80W-90 gear oil with limited slip additive during break-in for optimal clutch performance
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure carton 12 x 12 x 12 inches
- Weight: 24 lbs
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Yukon Gear & Axle
Yukon Gear & Axle provides the highest quality aftermarket drivetrain parts in the industry. Yukon products are produced using superior materials and built to tolerances that exceed OE specifications. We do drivetrain right! Yukon manufactures high performance ring & pinions, positractions, lockers, axle upgrades, rebuild kits, hubs, driveshafts, diff covers, and more. Proven at the King of the Hammers and the granite crags and outcrops of Moab, Yukon products are built for abuse so you can gear up and wheel with confidence. At Yukon Gear & Axle we make it our Mission to build quality parts that exceed expectation. It’s that simple! Our in-house engineering group utilizes state-of-the-art software to design product that’s then manufactured in partnership by some of the world’s foremost leaders in OEM manufacturing. After rigorous testing and intense quality inspection, we’re proud to call it Yukon.
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