Yukon Gear Trac Loc For Ford 9in With 31 Spline Axles. Aggressive Design Yukon Gear & Axle YUKYDGF9-31-AG
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Yukon Gear Trac Loc For Ford 9in With 31 Spline Axles. Aggressive Design

YUKYDGF9-31-AG
883584260097
Differentials
20+ Units In Stock - Ships Next Business Day
$ 906.89
$ 906.89

SKU: YDGF9-31-AG | UPC: 883584260097

Yukon Gear Dura Grip Positraction Limited Slip Differential for Ford 9" 31 Spline Axles Aggressive Design Fits 1957-1988 Ford Models

The Yukon Dura Grip YDGF9-31-AG is a positraction limited slip differential designed for Ford 9-inch differentials with 31 spline axles. It fits a wide range of Ford vehicles from 1957 to 1988 including Mustangs Broncos F-Series trucks Fairlanes Rancheros and Econolines. This aggressive design provides smooth operation with strong traction for off-road street and track use delivering reliable power to both wheels.

Key Features

  • Aggressive Clutch Pack: Composite clutches engage quickly for maximum grip in low traction conditions across dirt mud snow or pavement
  • High Strength Nodular Case: Cast from durable nodular iron to withstand high torque and heavy abuse
  • Forged 4320 Chromoly Spider Gears: Heat treated for exceptional strength and longevity under extreme loads
  • Rebuildable Design: Serviceable clutches and components allow multiple rebuilds for extended service life
  • Smooth Positraction Operation: Transfers power evenly without chatter for confident handling in varied terrains

Product Notes

  • Direct replacement for open differentials or factory lockers in Ford 9-inch housings
  • Requires proper break-in procedure with specific gear oil additive for optimal clutch performance
  • Packaged in sturdy box dimensions 11.8 x 11.8 x 11.8 inches product weight 27.85 lbs shipping weight 30 lbs

Installation Notes

  • Professional installation recommended.
  • Confirm 31 spline axles and Ford 9-inch ring gear 9.0 to 9.75-inch diameter
  • Uses factory hardware torque specs per Ford service manual includes clutch preload shims

This Part Fits

Year Make Model Submodel
1957-1970 Ford Fairlane 500
1966-1967 Ford Fairlane 500XL
1957-1969 Ford Fairlane Base
1960-1970 Ford Falcon Base
1962 Ford Falcon Deluxe
1963-1970 Ford Falcon Futura
1963-1965 Ford Falcon Futura Sprint
1959-1967 Ford Galaxie Base
1957-1974 Ford F-100 Base
1976-1978 Ford F-100 Base
1983 Ford F-100 Base
1975-1982 Ford F-100 Custom
1975-1978 Ford F-100 Northland
1975-1981 Ford F-100 Ranger
1978-1981 Ford F-100 Ranger Lariat
1975-1981 Ford F-100 Ranger XLT
1961 Ford Galaxie Club Victoria
1960 Ford Galaxie Special
1961 Ford Galaxie Starliner
1961 Ford Galaxie Sunliner
1961 Ford Galaxie Town Victoria
1968-1974 Ford Galaxie 500 Base
1968-1970 Ford Galaxie 500 XL
1972-1976 Ford Gran Torino Base
1964-1969 Mercury Comet Base
1971-1977 Mercury Comet Base
1967-1973 Mercury Cougar Base
1977-1979 Mercury Cougar Base
1969-1970 Mercury Cougar Boss 302
1969-1970 Mercury Cougar Boss 429
1977 Mercury Cougar Brougham
1966-1974 Ford Bronco Base
1975-1986 Ford Bronco Custom
1985-1986 Ford Bronco Eddie Bauer
1975 Ford Bronco Northland
1978 Ford Bronco Northland
1975 Ford Bronco Ranger
1978-1981 Ford Bronco Ranger XLT
1968-1969 Ford Bronco Roadster
1967-1979 Ford Ranchero 500
1967 Ford Ranchero 500 XL
1957-1971 Ford Ranchero Base
1957-1958 Ford Ranchero Custom
1966 Ford Ranchero Custom
1968-1979 Ford Ranchero GT
1970-1979 Ford Ranchero Squire
1955-1979 Ford Thunderbird Base
1969-1970 Ford Mustang Boss 429
1970-1973 Ford Mustang Grande
1970-1973 Ford Mustang Mach 1
1965-1970 Ford Mustang Shelby GT-350
1966 Ford Mustang Shelby GT-350H
1967-1970 Ford Mustang Shelby GT-500
1968 Ford Mustang Shelby GT-500KR
1969-1970 Mercury Cougar Cobra Jet
1977 Mercury Cougar Villager
1967-1979 Mercury Cougar XR-7
1975-1980 Mercury Grand Marquis Base
1979-1980 Mercury Grand Marquis Colony Park
1969-1974 Ford E-100 Econoline Club Wagon
1975-1983 Ford E-100 Econoline Custom
1975-1978 Ford E-100 Econoline Northland
1983 Ford E-100 Econoline XL
1979-1982 Ford E-150 Econoline Base
1984-1986 Ford E-150 Econoline Base
1969-1974 Ford E-200 Econoline Club Wagon
1970-1974 Ford E-200 Econoline Custom Wagon
1975-1980 Ford E-250 Econoline Base
1975-1980 Ford E-250 Econoline Chateau
1975-1980 Ford E-250 Econoline Custom
1975-1978 Ford E-250 Econoline Northland
1970-1976 Ford LTD Brougham
1975-1979 Ford LTD Country Squire
1975-1979 Ford LTD Landau
1970-1977 Ford Maverick Base
1975-1977 Ford Maverick Grabber
1965-1973 Ford Mustang Base
1969-1971 Ford Mustang Boss 302
1971-1972 Ford Mustang Boss 351
1973-1976 Ford Gran Torino Brougham
1974-1975 Ford Gran Torino Elite
1972-1975 Ford Gran Torino Sport
1972-1976 Ford Gran Torino Squire
1975-1979 Ford Granada Base
1978-1979 Ford Granada ESS
1975-1979 Ford Granada Ghia
1965-1979 Ford LTD Base
1975-1977 Ford Bronco Sport
1968-1973 Ford Bronco Wagon
1982-1983 Ford Bronco XLS
1984-1986 Ford Bronco XLT
1982-1983 Ford Bronco XLT Lariat
1969-1982 Ford E-100 Econoline Base
1975-1982 Ford E-100 Econoline Chateau
1975-1981 Ford F-150 Ranger
1978-1981 Ford F-150 Ranger Lariat
1975-1981 Ford F-150 Ranger XLT
1982-1987 Ford F-150 XL
1982-1983 Ford F-150 XLS
1977 Ford F-150 XLT
1983-1984 Ford F-150 XLT
1982 Ford F-150 XLT Lariat
1985-1987 Ford F-150 XLT Lariat
1978 Ford Thunderbird Diamond Jubilee
1979 Ford Thunderbird Heritage
1978-1979 Ford Thunderbird Town Landau
1958-1979 Lincoln Continental Base
1968-1971 Lincoln Mark III Base
1964-1965 Mercury Comet 202
1964-1965 Mercury Comet 404
1979-1982 Ford E-150 Econoline Chateau
1979-1983 Ford E-150 Econoline Custom
1987-1988 Ford E-150 Econoline Custom
1983-1988 Ford E-150 Econoline XL
1971-1972 Ford E-200 Econoline Chateau Wagon
1982-1983 Ford F-100 XL
1982-1983 Ford F-100 XLS
1977 Ford F-100 XLT
1982-1983 Ford F-100 XLT Lariat
1976-1978 Ford F-150 Base
1983-1986 Ford F-150 Base
1975-1982 Ford F-150 Custom
1987 Ford F-150 Custom
1975-1978 Ford F-150 Northland

Why Choose Yukon Gear?

  • Over 40 years engineering driveline components for trucks SUVs and off-road vehicles
  • Uses premium materials like chromoly steel and nodular iron for daily driver and race durability
  • Precise tolerances ensure quiet operation and direct fit in OEM housings

Frequently Asked Questions

  • Q: Will this fit my 1969 Ford Mustang with Ford 9-inch rear?
    A: Yes it fits 1965-1973 Mustang Base Boss 302 Boss 351 Boss 429 Mach 1 Shelby models with 31 spline axles confirm your axle spline count
  • Q: What materials are used in the spider gears and case?
    A: Forged 4320 chromoly spider gears and high strength nodular iron case built for high horsepower and torque applications
  • Q: What warranty covers this Dura Grip?
    A: Backed by Yukon Gear limited warranty rebuildable design extends usability contact manufacturer for details

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Secure foam protected box 11.8 x 11.8 x 11.8 inches
  • Weight: 27.85 lbs product 30 lbs shipping
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