True Trac Detroit Positraction, helping you improve your traction!
Need more traction control, the Eaton Detroit TruTrac positraction a lower cost alternative. This positraction unit gained notoriety in off-road applications where strength is important. Today, we offer the Tru Trac Positraction Limited Slip Differentials for a wide varity of automobiles and light trucks in the aftermarket. 

The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. It remains the leading helical gear-type limited slip differential in the industry. Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintenance free traction recognized not only for its toughness, but its smooth and quiet operation as well.
Eaton TrueTrac Locker's are set apart from every other positraction units by:
Its 100% locking differential, strength, durability and toughness are legendary gives you traction when you need it, to get ultimate performance and get out of the worst situations.
Its 100% locking differential, strength, durability and toughness are legendary gives you traction when you need it, to get ultimate performance and get out of the worst situations.
Please Click on Part Numbre to buy it online
Part Number | Truetrac | Application |
Ring Gear Dia.
|
Ratios
|
Axle Spline Count
|
912A654 | TT70P10163 | AAM GM |
8"
|
28
|
|
912A549 | 52588 | AMC20 |
29
|
||
912A573 | 52752 | AMC20 |
2.73 & Down
|
29
|
|
912A579 | 53080 | AMC20 |
3.08 & Up
|
29
|
|
914A583 | 52814 | Chrysler |
8.75
|
33
|
|
912A553 | 52688 | Chrysler |
8.25"
|
2.71 & Up
|
29
|
913A572 | 52790 | Chrysler |
8.75"
|
30
|
|
913A368 | 52719 | Chrysler |
9.25"
|
31
|
|
913A614 | TT70P00057 | Corvette Dana 44 C4NA93 |
9.75
|
||
913A591 | 53084 | Dana |
3.73 & Down
|
30
|
|
912A588 | 53077 | Dana 30 Rear |
3.73 & Up
|
28
|
|
912A585 | 53075 | Dana30 |
3.73 & Up
|
27
|
|
912A584 | 53073 | Dana30F |
3.54 & Down
|
27
|
|
912A569 | 53078 | Dana 35 |
3.55 & Up
|
27
|
|
913A592 | 53085 | Dana 44 Front |
30
|
||
913A589 | 53080 | Dana 44 Rear |
3.73 & Down
|
30
|
|
913A590 | 53082 | Dana44 Rear |
3.92 & Up
|
30
|
|
913A389 | TT70P52452 | Dana 60 |
4.10 & Down
|
30
|
|
913A390 | TT70P52453 | Dana 60 |
4.56 & Up
|
30
|
|
915A385 | TT70P52448 | Dana 60 |
4.10 & Down
|
35
|
|
915A386 | TT70P52449 | Dana 60 |
4.56 & Up
|
35
|
|
915A387 | TT70P52450 | Dana 60 |
4.10 & Down
|
35
|
|
915A388 | TT70P52451 | Dana 60 |
4.56 & Up
|
35
|
|
914A643 | TT70P00053 | Dodge Front |
9.25
|
33
|
|
912A316 | 52605 | Ford |
7.5"
|
28
|
|
913A561 | 52670 | Ford |
8.8"
|
31
|
|
912A562 | 52676 | Ford |
8.8"
|
28
|
|
912A563 | 52679 | Ford |
8.8"
|
28
|
|
913A477 | 52694 | Ford |
9.75"
|
34
|
|
912A587 | 52844 | Ford |
9"
|
28
|
|
912A616 | 52911 | Ford |
8"
|
28
|
|
913A586 | 52825 | Ford |
9"
|
31
|
|
915A55 | Ford |
10.25 & 10.5
|
|||
912A580 | 52803 | Ford 8" |
28
|
||
912A317 | 52571 | GM 10Bolt |
7.625"
|
3.23 & Up
|
28
|
911A319 | 52581 | GM10Bolt |
7.5"
|
3.23 & Up
|
26
|
911A415 | 52584 | GM10Bolt |
7.5"
|
3.08 & Down
|
26
|
912A556 | 52636 | GM10Bolt |
8.5"
|
2.73 & Up
|
28
|
912A557 | 52645 | GM10Bolt |
8.5"
|
2.73 & Up
|
28
|
913A481 | 52625 | GM10Bolt |
8.5"
|
273 & Up
|
30
|
914A575 | 52763 | GM 12Bolt Car 4S | 3.90 & Up | 33 | |
914A576 | 52775 | GM 12Bolt Car 3S | 3.08-3.73 | 33 | |
913A555 | 52635 | GM12 Bolt Car 3S |
30
|
||
913A315 | 50737 | GM12Bolt Truck |
30
|
||
914A538 | TT70P00080 | GM Rear |
9.5"
|
All
|
33
|
912A642 | TT70P00045 | GTO2856 |
7.68
|
||
910A416 | 51048 | Land Rover Front |
10
|
||
910A461 | 51334 | Land Rover Front |
10
|
||
910A400 | TT70P51047 | Land Rover Rear |
10
|
||
910A460 | 51333 | Land Rover Rear |
10
|
||
912A593 | 52871 | LandRover/Defender |
24
|
||
912A407 | TT70P51006 | LandRover Front |
24
|
||
912A383 | TT70P51001 | LandRover Rear |
24
|
||
913A582 | 52806 | Nissan Titan |
32
|
||
911A644 | TT70P00058 | Tacoma Front |
27
|
||
911A445 | TT70P51243 | Toyota Front |
7.5"
|
27
|
|
913A612 | 52890 | Toyota LF Lan Cruiser Reverse 1990 |
8"
|
30
|
|
911A565 | 52704 | Toyota Rear 2WD |
7.5"
|
27
|
|
913A609 | 52887 | Toyota SF Front |
8"
|
30
|
|
913A611 | 52889 | Toyota SR |
8"
|
30
|
|
913A541 | 52493 | Toyota Tacoma & T100 |
8.0"
|
30
|
|
911A342 | 50823 | Toyota Tacoma & T100 Front |
7.5”
|
30
|
|
913A610 | 52888 | Toyota V6 & Turbo LR |
8"
|
30
|