This is a genuine Dana/Spicer Trac Lok posi for 373 and 354 gear ratios in Dodge applications. Can be used in Fords with 354 gears, but be careful with 373 applications as most Ford’s used a 373 gearset with a thin ring gear and a 410 and up differential carrier. These axle gears are the [...]

This is a genuine AAM helical posi differential for 2016 and newer Dodge Ram 3500 trucks with the 11.8 differential and 16 bolt ring gear. 

This is a genuine AAM posi differential carrier for the 2010-2014 Camaro with the V8 independent rear only. The GM number 92230401 and the AAM number is 4053855. These are a clutch type posi.

This is a genuine AAM positrac differential for a 2003 or newer Dodge 3/4 ton truck. This is the original helical type limited slip differential.

This is a genuine Dana Trac Lok limited slip differential for a regular Dana 44 with 30 spline axles and 3:73 and faster (3:54, 3:21 etc.).

This is an aftermarket replacement for the Trac Lok posi differential found in older Jeep, GM, Dodge, and Ford vehicles. This is for the 3:92 and slower gear ratios (4:10; 4:56, etc.)

This is a genuine Dana/Spicer posi track differential. This is the helical or Truetrac style posi that uses worm gears instead of axle and spider gears with clutches. this is for 37 spline axles and is for 4:10 and slower (4:56, 4:63, 4:88 etc.). These were commonly found in F450 trucks from the early 1990’s [...]

This is a genuine Dana Trac Lok limited slip differential assembly for Ford and Dodge trucks with the Dana 80 and 35 spline axles. This carrier is for ratio’s 4:10 and down (4:63, 4:88, etc.) although it does work in some Ford trucks that had a factory 3:73 gear ration with a thin ring gear. [...]