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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



  • 30 Products
    AMC 20

    357-912A549
    Detroit Truetrac Differential
  • AMC 20 Independent Front Suspension
  • Hummer H1
  • 29-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 2.73 & Down Gear Ratios
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  • $604.99
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    357-912A573
    Detroit Truetrac Differential
  • AMC 20
  • 1980-86 Jeep
  • Hummer H1
  • 29-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 2.73 & Down Gear Ratios
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  • $543.99
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    357-912A579
    Detroit Truetrac Differential
  • AMC 20
  • 1980-86 Jeep
  • Hummer H1 IRS
  • 29-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 3.08 & Up Gear Ratios
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  • $625.99
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    Chrysler 8.375"

    357-912A553
    Detroit Truetrac Differential
  • Chrysler 8.375"
  • 1997-09 MOPAR Truck/Van
  • 29-Spline Axles
  • 8.375" Diameter Ring Gear
  • Fits 2.73 & Up Gear Ratios
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  • $645.99
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    Chrysler 8.75"

    357-913A572
    Detroit Truetrac Differential
  • Chrysler 8.75"
  • 1965-74 Chrysler Truck/Van
  • 30-Spline Axles
  • 8.75" Diameter Ring Gear
  • Fits 2.76-4.56 Gear Ratios
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  • $549.99
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    357-914A583
    Detroit Truetrac Differential
  • Chrysler 8.75"
  • 1965-74 Chrysler Truck/Van
  • 33-Spline Axles
  • 8.75" Diameter Ring Gear
  • Fits 2.76-4.56 Gear Ratios
    More info on Detroit Locker 914A583
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  • $631.99
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    Chrysler 9.25"

    357-913A368
    Detroit Truetrac Differential
  • Chrysler 9.25"
  • 1974-10 Chrysler Truck/Van
  • 31-Spline Axles
  • 9.25" Diameter Ring Gear
  • Fits 2.76-4.56 Gear Ratios
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  • $551.99
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    Dana 60

    357-913A390
    Detroit Truetrac Differential
  • Dana 60
  • Up To 1974 GM Truck/Van
  • 1972-02 MOPAR
  • 30-Spline Axles
  • 9.75" Diameter Ring Gear
  • Fits 4.56 & Up Gear Ratios
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  • $651.99
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    Dana 60HD

    357-915A385
    Detroit Truetrac Differential
  • Dana 60HD
  • 1973-91 GM Truck/Van
  • 35-Spline Axles
  • 9.75" Ring Gear
  • Fits 4.10 & Down Gear Ratios
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  • $711.99
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    357-915A386
    Detroit Truetrac Differential
  • Dana 60HD
  • 1973-91 GM Truck/Van
  • 35-Spline Axles
  • 9.75" Ring Gear
  • Fits 4.56 & Up Gear Ratios
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  • $711.99
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    357-915A387
    Detroit Truetrac Differential
  • Dana 60HD
  • 1977-87 GM Truck/Van
  • 1971-93 MOPAR
  • 35-Spline Axles
  • 9.75" Diameter Ring Gear
  • Fits 4.10 & Down Gear Ratios
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  • $661.99
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    357-915A388
    Detroit Truetrac Differential
  • Dana 60HD
  • 1977-87 GM Truck/Van
  • 1971-93 MOPAR
  • 35-Spline Axles
  • 9.75" Diameter Ring Gear
  • Fits 4.56 & Up Gear Ratios
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  • $651.99
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    Dana 80

    357-915A567
    Detroit Truetrac Differential
  • Dana 80
  • 1994-02 Chrysler
  • 1998-09 Ford Truck/Van
  • 35-Spline Axles
  • 11.5" Diameter Ring Gear
  • Fits 3.73 & Down Gear Ratios
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  • $727.99
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    Ford 10.25"/10.5"

    357-915A550
    Detroit Truetrac Differential
  • 1985-12 Ford Truck
  • Ford 10.25"/10.5"
  • 35-Spline Axles
  • 10.25"/10.5" Diameter Ring Gear
  • Fits All Gear Ratios
    More info on Detroit Locker 915A550
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  • $574.99
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    Ford 8"

    357-912A616
    Detroit Truetrac Differential
  • To 1978 Ford Car/Truck
  • Ford 8"
  • 28-Spline Axles
  • 8" Diameter Ring Gear
  • Fits 3.25" & Up Gear Ratios
    More info on Detroit Locker 912A616
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  • $545.99
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    357-913A701
    Detroit Truetrac Differential
  • Ford 8"
  • 1987-11 Ford Car/Light Truck/SUV
  • 33-Spline Axle
  • 8.8" Diameter Ring Gear
  • 4 Pinion
  • Fits All Gear Ratios
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  • $645.99
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    Ford 9"

    357-912A587
    Detroit Truetrac Differential
  • Ford 9"
  • To 1979 Ford Car
  • 1957-1987 Ford Truck
  • 28-Spline Axles
  • 9" Diameter Ring Gear
  • Fits 3.25 & Up Gear Ratios
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  • $509.99
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    357-913A586
    Detroit Truetrac Differential
  • Ford 9"
  • 1957-78 Ford Car
  • 1957-87 Ford Truck
  • 31-Spline Axles
  • 9" Diameter Ring Gear
  • Fits 3.25 & Up Gear Ratios
    More info on Detroit Locker 913A586
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  • $509.99
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    Ford 9.75"

    357-913A477
    Detroit Truetrac Differential
  • Ford 9.75"
  • 1997-12 Ford Truck
  • 34-Spline Axles
  • 9.75" Diameter Ring Gear
  • Fits All Gear Ratios
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  • $584.99
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    GM 10-Bolt

    357-912A686
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 2010-13 GM Camaro
  • 32-Spline Axles
  • 8.6" Diameter Ring Gear
  • Fits 3.45 & 3.73 Gear Ratios
    More info on Detroit Locker 912A686
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  • $615.99
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    GM 14-Bolt

    357-914A538
    Detroit Truetrac Differential
  • GM 14 Bolt
  • 1981-11 GM Truck
  • 33-Spline Axles
  • 9.5" Diameter Ring Gear
  • Fits All Gear Ratios
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  • $596.99
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    GM and Ford Dana 80

    357-916A427
    Detroit Truetrac Differential
  • GM and Ford Dana 80
  • 1992-07 GM Truck/Van
  • 1990-98 Ford Truck/Van
  • 37-Spline Axles
  • 11.5" Diameter Ring Gear
  • Fits 4.10 & Up Gear Ratios
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  • $686.99
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    Jeep Dana 30

    357-912A584
    Detroit Truetrac Differential
  • Jeep Dana 30
  • 1971-11 Jeep
  • 27-Spline Axles
  • Fits 3.54 & Down Gear Ratios
    More info on Detroit Locker 912A584
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  • $594.99
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    Land Rover

    357-910A460
    Detroit Truetrac Differential
  • To 1985 Rover Type
  • 10-Spline Axles
  • Fits 4.7 Gear Ratio
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  • $649.99
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    357-910A461
    Detroit Truetrac Differential
  • To 1985 Rover Type
  • 10-Spline Axles
  • Fits 4.7 Gear Ratio
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  • $649.99
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    357-912A407
    Detroit Truetrac Differential
  • 1993-00 Rover Type
  • 24-Spline Axles
  • Fits 3.54 Gear Ratio
    More info on Detroit Locker 912A407
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  • $569.99
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    357-912A593
    Detroit Truetrac Differential
  • To 1985 Salisbury Defender
  • 24-Spline Axles
  • Fits 4.10 & Down Gear Ratios
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  • $641.99
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    Nissan Dana 44

    357-913A582
    Detroit Truetrac Differential
  • Nissan Dana 44
  • 2003-05 Titan
  • 2005-07 Xterra With Manual Transmission
  • 32-Spline Axles
  • Fits All Gear Ratios
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  • $732.99
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    Toyota 8"

    357-913A610
    Detroit Truetrac Differential
  • Toyota 8"
  • 1986-09 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear (4 Pinion) (4x4 Turbo/Gas/Diesel)
  • Fits All Gear Ratios
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  • $513.99
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    Volvo Dana 30

    357-912A588
    Detroit Truetrac Differential
  • Volvo Dana 30
  • Volvo RWD
  • 27-Spline Axles
  • 7.2" Diameter Ring Gear
  • Fits 3.73 & Up Gear Ratios
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  • $513.99
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    30 Products