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Detroit Truetrac Differentials


Detroit TrueTrac
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


  • 26 Products
    Dana 44
    Detroit TrueTrac 913A592 -
    363-913A592
    Detroit Truetrac Differential
  • Dana 44
  • Up to 1980 GM Truck/Van
  • 1983-97 Ford Truck
  • 1984-2001 MOPAR
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.92 & Up Gear Ratios
  • Front Only
  • FREE
    SHIPPING
    & HANDLING!
    $444.99
    Ships
    Ford 7.5"
    Detroit TrueTrac 912A316 -
    363-912A316
    Detroit Truetrac Differential
  • Ford 7.5"
  • 1983-2009 Ford Car/Truck
  • 28-Spline Axles
  • 7.5" Diameter Ring Gear
  • Fits All Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $479.99
    Ships
    Ford 8.8"
    Detroit TrueTrac 912A562 -
    363-912A562
    Detroit Truetrac Differential
  • Ford 8.8"
  • 1983-2011 Ford Car/Truck
  • 28-Spline Axles
  • 8.8" Diameter Ring Gear
  • Fits All Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $479.99
    Ships
    Detroit TrueTrac 913A561 -
    363-913A561
    Detroit Truetrac Differential
  • Ford 8.8"
  • 1987-2011 Ford Car/Truck
  • 31-Spline Axles
  • 8.8'' Diameter Ring Gear
  • Fits All Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $489.99
    Order Today Ships 02/19/16
    Ford 9"
    Detroit TrueTrac 912A587 -
    363-912A587
    Detroit Truetrac Differential
  • Ford 9"
  • Up to 1979 Ford Car
  • 1957-87 Ford Truck
  • 28-Spline Axles
  • 9" Diameter Ring Gear
  • Fits 3.25 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $479.99
    Ships
    Ford and Jeep Dana 44
    Detroit TrueTrac 913A589 -
    363-913A589
    Detroit Truetrac Differential
  • Ford and Jeep Dana 44
  • 1977-79 Ford Truck
  • 1969-2012 Jeep
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.73 & Lower Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $444.99
    Ships
    Detroit TrueTrac 913A590 -
    363-913A590
    Detroit Truetrac Differential
  • Ford and Jeep Dana 44
  • 1977-79 Ford Truck
  • 1969-2009 Jeep
  • 30-Spline Axles
  • 8.5" Diameter Ring Gear
  • Fits 3.92 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $444.99
    Ships
    GM 10-Bolt
    Detroit TrueTrac 911A319 -
    363-911A319
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1975-89 GM Car
  • 1982-2009 GM Truck
  • 26-Spline Axles
  • 7.5'' Diameter Ring Gear
  • Fits 3.23 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $386.99
    Ships
    Detroit TrueTrac 911A415 -
    363-911A415
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1975-89 GM Car
  • 1982-1989 GM Truck
  • 26-Spline Axles
  • 7.5'' Diameter Ring Gear
  • Fits 3.08 & Lower Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $397.99
    Ships
    Detroit TrueTrac 912A317 -
    363-912A317
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1988-2005 GM Car
  • 1988-2009 GM Truck
  • 28-Spline Axles
  • 7.5''/7.6'' Diameter Ring Gear
  • Fits 3.23 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $392.99
    Ships
    Detroit TrueTrac 912A556 -
    363-912A556
    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
  • FREE
    SHIPPING
    & HANDLING!
    $392.99
    Order Today Ships 02/24/16
    Detroit TrueTrac 912A556-R -
    363-912A556-R
    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
  • Remanufactured
  • FREE
    SHIPPING
    & HANDLING!
    Was: $413.99
    Now: $397.99
    Ships
    Detroit TrueTrac 912A557 -
    363-912A557
    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
  • FREE
    SHIPPING
    & HANDLING!
    $438.99
    Ships
    Detroit TrueTrac 913A481 -
    363-913A481
    Detroit Truetrac Differential
  • GM 10-Bolt
  • 1988-96 GM Car
  • 1988-2009 GM Truck
  • 30-Spline Axles
  • 8.5''/8.6'' Diameter Ring Gear
  • Fits 2.73 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $413.99
    Ships
    GM 12-Bolt
    Detroit TrueTrac 913A315 -
    363-913A315
    Detroit Truetrac Differential
  • GM 12-Bolt
  • Up to 1982 GM Truck
  • 30-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 3.73 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $464.99
    Order Today Ships 02/24/16
    Detroit TrueTrac 913A555 -
    363-913A555
    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
  • FREE
    SHIPPING
    & HANDLING!
    $433.99
    Ships
    Detroit TrueTrac 914A575 -
    363-914A575
    Detroit Truetrac Differential
  • GM 12-Bolt
  • 1964-72 GM Car
  • 33-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 4.10 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $444.99
    Ships
    Detroit TrueTrac 914A576 -
    363-914A576
    Detroit Truetrac Differential
  • GM 12-Bolt
  • 1964-72 GM Car
  • 33-Spline Axles
  • 8.875" Diameter Ring Gear
  • Fits 3.08-390 Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $479.99
    Ships
    Jeep Dana 30
    Detroit TrueTrac 912A585 -
    363-912A585
    Detroit Truetrac Differential
  • Jeep Dana 30
  • 1971-2011 Jeep
  • 27-Spline Axles
  • Fits 3.73 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $397.99
    Ships
    Jeep Dana 35
    Detroit TrueTrac 912A569 -
    363-912A569
    Detroit Truetrac Differential
  • Jeep Dana 35
  • 1984-2009 Jeep
  • 27-Spline Axles
  • 7.56" Diameter Ring Gear
  • Fits 3.54 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $402.99
    Ships
    Toyota 8"
    Detroit TrueTrac 913A609 -
    363-913A609
    Detroit Truetrac Differential
  • Toyota 8"
  • 1974-85 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear (2pinion)
  • Fits All Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $484.99
    Order Today Ships 02/18/16
    Detroit TrueTrac 913A610 -
    363-913A610
    Detroit Truetrac Differential
  • Toyota 8"
  • 1986-2009 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear (4 Pinion) (4x4 Turbo/Gas/Diesel)
  • Fits All Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $464.99
    Ships
    Detroit TrueTrac 913A611 -
    363-913A611
    Detroit Truetrac Differential
  • Toyota 8"
  • 1974-96 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear (2 Pinion) (Non Turbo)
  • Fits All Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $484.99
    Order Today Ships 02/18/16
    Detroit TrueTrac 913A612 -
    363-913A612
    Detroit Truetrac Differential
  • Toyota 8"
  • 1990-2007 Toyota Truck
  • 30-Spline Axles
  • 8" Diameter Ring Gear
  • 4 Pinion
  • Fits All Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $484.99
    Order Today Ships 02/18/16
    Toyota 8.4"
    Detroit TrueTrac 913A541 -
    363-913A541
    Detroit Truetrac Differential
  • Toyota 8.4"
  • 1995-2005 Toyota Truck
  • 30-Spline Axles
  • 8.4" Diameter Ring Gear
  • Fits 3.54-5.29 Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $469.99
    Ships
    Volvo Dana 30
    Detroit TrueTrac 912A588 -
    363-912A588
    Detroit Truetrac Differential
  • Volvo Dana 30
  • Volvo RWD
  • 27-Spline Axles
  • 7.2" Diameter Ring Gear
  • Fits 3.73 & Up Gear Ratios
  • FREE
    SHIPPING
    & HANDLING!
    $479.99
    Ships

    26 Products