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Detroit Truetrac Differentials


Detroit Locker
Detroit Truetrac Differentials

The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling characteristics.

The Truetrac operates as a standard or open differential under normal driving conditions, allowing one wheel to spin faster or slower as necessary. When a wheel encounters a loss of traction or the terrain changes, the gear separation forces take effect and transfer torque to the high-traction wheel. The helical-shaped gears mesh with increasing force until wheel spin is slowed or completely stopped. When the vehicle exits the low traction situation, the differential resumes normal operation.

Operation of the Truetrac is smooth, quiet and automatic. The unit will engage without any driver knowledge or action required. It also has no wearable parts and requires no maintenance, meaning less time in the garage and more on the road.

Features:
  • Helical-style pinion gears
  • Limited-slip operation
  • Smooth and automatic engagement - no driver action needed
  • Parts are maintenance free meaning more time on the road
  • Validated performance and durability



  • 29 Products
    Dana 44

    357-913A591
    Detroit Truetrac Differential
  • Dana 44
  • To 1980 GM Truck/Van
  • 1983-97 Ford Truck
  • 1984-01 MOPAR
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.73 & Down Gear Ratios
  • Front Only
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  • $481.99
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    357-913A592
    Detroit Truetrac Differential
  • Dana 44
  • To 1980 GM Truck/Van
  • 1983-97 Ford Truck
  • MOPAR 1984-01
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.92 & Up Gear Ratios
  • Front Only
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    Ford 7.5"

    357-912A316
    Detroit Truetrac Differential
  • Ford 7.5"
  • 1983-09 Ford Car/Truck
  • 28-Spline Axles
  • 7.5" Diameter Ring Gear
  • Fits All Gear Ratios
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    Ford 8.8"

    357-912A562
    Detroit Truetrac Differential
  • Ford 8.8"
  • 1983-11 Ford Car/Truck
  • 28-Spline Axles
  • 8.8" Diameter Ring Gear
  • Fits All Gear Ratios
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  • $479.99
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    357-912A563
    Detroit Truetrac Differential
  • 1997-09 Ford IFS Car/Truck
  • Ford 8.8"
  • 28-Spline Axles
  • 8.8" Diameter Ring Gear
  • Fits All Gear Ratios
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  • $466.99
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    357-913A561
    Detroit Truetrac Differential
  • Ford 8.8"
  • 1987-11 Ford Car/Truck
  • 31-Spline Axles
  • 8.8'' Diameter Ring Gear
  • Fits All Gear Ratios
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  • $489.99
    Order Today Ships 05/05/14
    Ford and Jeep Dana 44

    357-913A589
    Detroit Truetrac Differential
  • Ford and Jeep Dana 44
  • 1977-79 Ford Truck
  • 1969-12 Jeep
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.73 & Down Gear Ratios
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  • $471.99
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    357-913A589U
    Detroit Truetrac Differential
  • Ford and Jeep Dana 44
  • 1977-79 Ford Truck
  • 1969-12 Jeep
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.73 & Down Gear Ratios
  • USED
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  • Was: $441.99
    Now: $420.99
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    357-913A590
    Detroit Truetrac Differential
  • Ford and Jeep Dana 44
  • 1977-79 Ford Truck
  • 1969-09 Jeep
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.92 & Up Gear Ratios
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  • $481.99
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    GM 10-Bolt

    357-911A319
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1975-89 GM Car
  • 1982-09 GM Truck
  • 26-Spline Axles
  • 7.5'' Diameter Ring Gear
  • Fits 3.23 & Up Gear Ratios
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  • $433.99
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    357-911A415
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1975-89 GM Car
  • 1982-09 GM Truck
  • 26-Spline Axles
  • 7.5'' Diameter Ring Gear
  • Fits 3.08 & Down Gear Ratios
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  • $399.99
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    357-912A317
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1988-05 GM Car
  • 1988-09 GM Truck
  • 28-Spline Axles
  • 7.5''/7.6'' Diameter Ring Gear
  • Fits 3.23 & Up Gear Ratios
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  • $413.99
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    357-912A556
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1971-89 GM Car
  • 1972-89 GM Truck
  • 28-Spline Axles
  • 8.5'' Diameter Ring Gear
  • Fits 2.73 & Up Gear Ratios
  • Rear Only
    More info on Detroit Locker 912A556
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  • $443.99
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    357-912A557
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1977-88 GM Car/Truck
  • 28-Spline Axles
  • 8.5'' Diameter Ring Gear
  • Fits 2.73-5.13 Gear Ratios
  • Front Only
    More info on Detroit Locker 912A557
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  • $441.99
    Order Today Ships 04/25/14

    357-913A481
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1988-96 GM Car
  • 1988-09 GM Truck
  • 30-Spline Axles
  • 8.5''/8.6'' Diameter Ring Gear
  • Fits 2.73 & Up Gear Ratios
    More info on Detroit Locker 913A481
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  • $443.99
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    GM 12-Bolt

    357-913A315
    Detroit Truetrac Differential
  • GM 12-Bolt
  • To 1982 GM Truck
  • 30-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 3.73 & Up Gear Ratios
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  • $469.99
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    357-913A555
    Detroit Truetrac Differential
  • GM 12-Bolt
  • 1964-72 GM Car
  • 30-Spline Axles
  • 8.875'' Diameter Ring Gear
  • Fits 3.08-3.90 Gear Ratios
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  • $479.99
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    357-914A575
    Detroit Truetrac Differential
  • GM 12-Bolt
  • 1964-72 GM Car
  • 33-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 4.10 & Up Gear Ratios
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  • $471.99
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    357-914A576
    Detroit Truetrac Differential
  • GM 12-Bolt
  • 1964-72 GM Car
  • 33-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 3.08-390 Gear Ratios
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    Jeep Dana 30

    357-912A585
    Detroit Truetrac Differential
  • Jeep Dana 30
  • 1971-11 Jeep
  • 27-Spline Axles
  • Fits 3.73 & Up Gear Ratios
    More info on Detroit Locker 912A585
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  • $397.99
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    Jeep Dana 35

    357-912A569
    Detroit Truetrac Differential
  • Jeep Dana 35
  • 1984-09 Jeep
  • 27-Spline Axles
  • 7.56" Diameter Ring Gear
  • Fits 3.54 & Up Gear Ratios
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  • $402.99
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    Land Rover

    357-910A400
    Detroit Truetrac Differential
  • 1985-93 Rover Type
  • 10-Spline Axles
  • Fits 3.54 Gear Ratio
    More info on Detroit Locker 910A400
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  • $466.99
    Order Today Ships 04/25/14

    357-910A416
    Detroit Truetrac Differential
  • 1985-93 Rover Type
  • 10-Spline Axles
  • Fits 3.54 Gear Ratio
    More info on Detroit Locker 910A416
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  • $466.99
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    357-912A383
    Detroit Truetrac Differential
  • 1993-00 Rover Type
  • 24-Spline Axles
  • Fits 3.54 Gear Ratio
    More info on Detroit Locker 912A383
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  • $476.99
    Order Today Ships 04/25/14
    Toyota 7.5"

    357-911A445
    Detroit Truetrac Differential
  • 1986-88 Toyota Hilux/Celica/Celica GT 4-Cylinder
  • 1986-04 Toyota 4Runner 4-Cylinder
  • Axle: 7.5" IFS
  • Axle Shaft Diameter: 1.10"/1.12"
  • 27-Spline Axles
  • Fits All Gear Ratios
    More info on Detroit Locker 911A445
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  • $471.99
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    Toyota 8"

    357-913A609
    Detroit Truetrac Differential
  • Toyota 8"
  • 1974-85 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear (2pinion)
  • Fits All Gear Ratios
    More info on Detroit Locker 913A609
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  • $481.99
    Order Today Ships 04/25/14

    357-913A611
    Detroit Truetrac Differential
  • Toyota 8"
  • 1974-96 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear (2 Pinion) (Non Turbo)
  • Fits All Gear Ratios
    More info on Detroit Locker 913A611
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  • $455.99
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    357-913A612
    Detroit Truetrac Differential
  • Toyota 8"
  • 1990-07 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear
  • 4 Pinion
  • Fits All Gear Ratios
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  • $491.99
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    Toyota 8.4"

    357-913A541
    Detroit Truetrac Differential
  • Toyota 8.4"
  • 1995-05 Toyota Truck
  • 30-Spline Axles
  • 8.4" Diameter Ring Gear
  • Fits 3.54-5.29 Gear Ratios
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    29 Products