12-Bolt Posi Unit - 30 Spline

** MORE PICTURES BELOW **

* New GM 12-Bolt Passenger Car Heavy-Duty Posi Unit

* Eaton-Style (clutch) Posi Unit

* Fits 3.08 to 3.90 Gear Ratios
(3 Series)

* Nodular Iron Case w/ Forged 4130 Internals

* High-Quality Composite Clutches

* 100% Re-Buildable

* 1-Year Factory Warranty Against Defects



* Gears & Bearing Kits Also Available
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