This Nissan RN4F31A 4 speed and RS5F31A RS5F31G 5 speed transmission rebuild kit is a complete rebuild kit. You can identify this transmission by its two piece aluminum case and two differential bearings (Part# 32010) they measure 49. 8 millemeter inside diameter and the rear pinion bearing is 19. 4 millemeters wide. This transmission is for a standard differential (non-posi). This kit includes all the bearings, seals, gaskets.
