Yukon Gear and Axles Dura Grip positraction limited slip differential provides smooth yet aggressive traction to give you the confidence and performance you need in a variety of terrains. The Dura Grip posi limited slip is engineered for long life, and is completely rebuildable. Dura Grips are built with a high strength nodular case and forged 4320 chrome-moly spider gears, and Raybestos composite clutches for long life. The Yukon Dura Grip: for unmatched posi-traction performance.
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You will need new carrier bearings and races for this install.
For 3.31 and Higher Ratios – Will only work on F150s with a 3.31 or higher gear ratio, including 3.55, 3.73, 4.11, 4.56, etc. It will not work on trucks with a 3.15 gear ratio.