Heavy Duty Eight Point Eight Seven Five Inch Posi Lock Differential Assembly With Thirty Splines and Custom Three Zero Seven To Three Nine Zero Ratios shown from the side.
Heavy Duty Eight Point Eight Seven Five Inch Posi Lock Differential Assembly With Thirty Splines And Custom Three Zero Seven To Three Nine Zero Ratios close-up view showing reinforced carrier shell and internal springs.
Heavy Duty Eight Point Eight Seven Five Inch Posi Lock Differential Assembly With Thirty Splines And Custom Three Zero Seven To Three Nine Zero Ratios, showing detailed internal components.
Heavy Duty Eight Point Eight Seven Five Inch Posi Lock Differential Assembly With Thirty Splines And Custom Three Zero Seven To Three Nine Zero Ratios top view showing detailed gear design.
Heavy Duty Eight Point Eight Seven Five Inch Posi Lock Differential Assembly With Thirty Splines And Custom Three Zero Seven To Three Nine Zero Ratios showing inner bearing detail.
Heavy Duty Eight Point Eight Seven Five Inch Posi Lock Differential Assembly With Thirty Splines And Custom Three Zero Seven To Three Nine Zero Ratios with bearings.

Heavy Duty Eight Point Eight Seven Five Inch Posi Lock Differential Assembly With Thirty Splines And Custom Three Zero Seven To Three Nine Zero Ratios Built Tough For Zero Wheel Spin And Bulletproof Street Handling Daily

$1,223.95 $2,477.00you save $1,253.05
Product ID: 1228-2949
UPC:





Precision 8.875 Posi Lock Differential with 30
✔️ 12 bolt diff unit 30 spline 3.07 to 3.90 ratio spec

This heavy duty posi lock assembly replaces worn factory units that cause jerky handling and rapid tire wear. You enjoy immediate throttle response during merges or highway passing maneuvers. The reinforced carrier shell prevents fluid leaks while keeping axle alignment stable.

✅ Friction plates hold integrated oil channels to constantly wash heat away from metal contact zones
✅ Vibration dampening properties eliminate steering wheel shake and floorboard tremors at sustained speeds
✅ Even torque distribution minimizes premature half shaft spline deterioration for extended maintenance intervals
✅ Solid gear meshing removes audible drivetrain rattling under aggressive acceleration loads

💡 What helps a hardened posi lock differential handle repeated street load cycles compared to budget replacements? Sealed friction internals maintain consistent clamping pressure through daily temperature fluctuations. - Open carriers rely solely on static gear geometry which often leads to unpredictable torque delivery - Preloaded posi housings use spiral bevel teeth to gradually transfer rotation without sudden shock loads - Oil circulated through precision grooves extends bearing seating life while preventing metallic grinding noises - Upgraded steel splines resist elongation patterns that normally cause catastrophic transaxle failure early on

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