8.875 Posi Traction 30 Spline 12 Bolt Differential Assembly Straight Shot Bolt On Upgrade With Rock Solid Gearing And Zero Hassle Fitment For Smooth Daily Cruisers And Tough Trucks

Precision bolt on rear axle differential upgrade for cars
✔️ 8.875inch body, 30 spline shaft, 12 bolt mount, 3.07 to 3.90 ratio

This sealed gear housing swaps out tired axle assemblies in sedans, pickups, and SUVs without frame welding. You slide the complete unit straight into the mounting brackets for an immediate drivetrain refresh. Trusted torque delivery keeps your rig running steady on city streets or gravel trails.

✅ 8.875inch carrier width locks firmly into factory mounts
✅ 30 spline output shafts grip axles without slipping
✅ 12 bolt mounting pattern aligns directly with chassis holes
✅ Machined ring and pinion set cuts noise and boosts grip
✅ Heavy duty steel housing resists impact and lasts longer
✅ Pre installed bearings and rubber seals prevent fluid leaks
✅ Compatible with 3.07 through 3.90 gear ratios for quick swaps

💡 What kind of gear oil protects a fresh bolt on replacement differential during long mountain runs?
That slick synthetic fluid is pretty handy when you push a rebuilt gearbox hard on steep grades.
- It forms a tenacious film over those precision meshing gears that resists shearing under load.
- The additive package shields the chrome plated splines from scoring and keeps elastomer seals pliable.
- Consistent viscosity ensures reliable torque split while you crawl over rocky patches or cruise interstate speeds.
- Sticking to recommended change intervals keeps the matched rolling elements running whisper quiet for years.

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