8.5" Oldsmobile 31Spline 12 BOLT (factory 3.08 or 3.23, or Richmond Gear R&Ps

Positraction Fits 8.5" Oldsmobile 12 bolt design 31 spline OEM 3.08 and 3.23 gear sets onlyYou may also like USA Standard Manual Transmission Bearing Kit NVT355 2007 & Newer Jeep.