D44 Detroit Locker, 30 Spline 3.73 and down
Trac-tech Detroit Locker
1971-96 Ford Bronco
1973-96 Ford F150 and F250 with D44
The Tractech Detroit locker
The Detroit Locker® is a fully automatic locking differential well known throughout the years for it’s premium performance and dependable operation.
It maximizes traction by delivering 100% of the torque and power to both drive wheels.
Engineered to keep both wheels in a constant drive mode, it unlocks automatically to permit necessary wheel speed differentiation.
Improved design performs like standard (open)
differential in normal driving...until you need it.
•Limits wheel spin on wet, muddy and icy terrain
for maximum traction.
•Improves handling and increases tread life by
allowing differences in wheel speed when turning
or operating on uneven surfaces.
•Dependable, rugged automatic system.
•Smooth operation - even in front drive steering axles.