Transmission Rebuild kit for the RWD 4 Speed Nissan Van with the F4W71E transmission for the years 1987-90 BK133 This Transmission is made with a (1) piece aluminum case and bell and uses a 22BO06S5X (22/18UR) front counter bearing (2.440" 62mm outside diameter) and 6306-N input bearing. This kit comes with all the main roller bearings, counter roller bearings, impact pocket needle, seals, and front retainer gasket.