8.875 Inch 12 Bolt Rear Differential Assembly With 30 Spline Positraction Gears And 3.07 To 3.90 Final Drive Ratios Built Tough For Heavy Hauling And Rollin Smooth On The Blacktop

Premium 12 bolt rear diff gearbox for heavy trucks
✔️ 8.875 inch 12 bolt posi unit 30 spline shafts match 3.07 to 3.90 ratios

This heavy duty rear differential replaces worn factory units in trucks and trailers. You get smooth power transfer and stable handling under tough loads. Install it to handle daily hauling or weekend trips without drivetrain stress.

✅ 30 spline positraction gears lock wheels together for grip
✅ Impact resistant housing stays solid under heavy compression
✅ Stable frame limits steering flex while carrying max weight
✅ Consistent gear ratios stop power surge during quick shifts

💡 Why choose a sealed rear differential assembly for towing setups?
Picking the right final drive ratio keeps your engine working smart instead of hard. These components bring reliable traction and smoother shifting to big rigs. Try these handy upgrades for your next project.
- Hardened steel pins hold up against rough pavement impacts
- Optimized gear teeth cut noise while boosting low end pull
- Pre lubricated units slide easily into tight chassis mounting spots
- Direct fit designs match existing suspension brackets perfectly

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