Duragrip Posi Differential. Stop doing those ridiculous and humiliating one wheel burn outs by upgrading to a Yukon 7.5in 28 Spline Duragrip Posi Differential from AmericanMuscle. A Limited Slip Differential (LSD) sometimes referred to as a "Posi" will allow both rear wheels to plant the power to the pavement giving you better traction and more impressive burnouts.Heavy Duty. Featuring a case constructed from nodular iron, this Yukon Gear Duragrip Limited Slip Differential boast forged 4320 steel internals and composite clutches for dependable heavy duty performance and long life. Application. This 7.5" Yukon Gear Duragrip Posi Differential will fit solid axle equipped Mustangs, including 1979-1985 V8 and 1986-2010 V6 models. Requires use of 28 spline axles. Application Note: 1979-1985 V8 and 1986-2010 V6 Mustangs came factory equipped with 28 spline axles.Technical Note. You will need to reuse your factory 7.5” gear set, or upgrade to a set of our 7.5" rear gears, required for this Limited Slip Differential. No aftermarket gears are included. For normal driving conditions we recommend you use 75W 90 rear gear oil. This will give you the same oil weight as factory. For colder temps or race use try 75w 140.
Save on Yukon Gear DuraGrip Posi Rear Differential; 28-Spline 7.5-Inch (79-85 V8 Mustang; 86-10 Mustang V6) with a American Muscle coupon