Yukon Traction Lock Locking Differential Assembly

Ford 9 inch, 31 spline. Off road operation, aggressive, this unit will chatter on the street.

Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.

Fits all Gear Ratios.
Fits 9" Ford with 31 Spline Axles.
Fully rebuildable design and proudly assembled in the USA.
Limited Slip Differential with Composite Clutches.
All units are backed by extensive product testing and state-of-the-art software design.
Yukon Dura Grips feature 4320 chromoly spider gears for ultimate durability.
4 Pinion Design.
Aggressive design.
Gears are cut to provide the strongest teeth possible in any terrain.
This unit has 1.783" bearing journals. This unit will not fit in Strange Engineering aluminum dropouts. Yukon recommends the use of high grade Non-Synthetic GL-5 gear oil and Limited Slip Differential additive for long life and smooth operation. The use of synthetic oil is not recommended and may result in aggressive or noisy operation. This unit requires the use of ring gear bolt part number YSPBLT-014.

* Ships from manufacturer. Allow a minimum of 1-8 weeks for delivery. Currently, however, some manufacturers are requiring much longer lead times. *

Ford Mustang Years:
1965 (65), 1966 (66), 1967 (67), 1968 (68), 1969 (69), 1970 (70), 1971 (71), 1972 (72), 1973 (73)
Above years shown are used for searches and are not application listings.

Mercury Cougar Years:
1967 (67), 1968 (68), 1969 (69), 1970 (70), 1971 (71), 1972 (72), 1973 (73)
Above years shown are used for searches and are not application listings.

Ford Falcon and Ranchero Years:
1970 (70)
Above years shown are used for searches and are not application listings.

Ford Fairlane and Ranchero Years:
1964 (64), 1965 (65), 1966 (66), 1967 (67), 1968 (68), 1969 (69), 1970 (70)
Above years shown are used for searches and are not application listings.

Ford Torino and Ranchero Years:
1968 (68), 1969 (69), 1970 (70), 1971 (71)
Above years shown are used for searches and are not application listings.

Ford Thunderbird Years:
1957 (57)
Above years shown are used for searches and are not application listings.

Ford Truck F1, F2, F3, F100, F150, F250, F350, Expedition, Excursion, Lincoln Navigator and Blackwood Years:
1948 (48), 1949 (49), 1950 (50), 1951 (51), 1952 (52), 1953 (53), 1954 (54), 1955 (55), 1956 (56), 1957 (57), 1958 (58), 1959 (59), 1960 (60), 1961 (61), 1962 (62), 1963 (63), 1964 (64), 1965 (65), 1966 (66), 1967 (67), 1968 (68), 1969 (69), 1970 (70), 1971 (71), 1972 (72), 1973 (73), 1974 (74), 1975 (75), 1976 (76), 1977 (77), 1978 (78), 1979 (79), 1980 (80), 1981 (81), 1982 (82), 1983 (83), 1984 (84), 1985 (85)
Above years shown are used for searches and are not application listings.

Ford Bronco Years:
1966 (66), 1967 (67), 1968 (68), 1969 (69), 1970 (70), 1971 (71), 1972 (72), 1973 (73), 1974 (74), 1975 (75), 1976 (76), 1977 (77), 1978 (78), 1979 (79), 1980 (80), 1981 (81), 1982 (82), 1983 (83), 1984 (84), 1985 (85)
Above years shown are used for searches and are not application listings.

NPD Part Number : F-4204-9TLC
Manufacturer Reference #'s: Yukon Gear YDGF9-31-AG (26009),