Fits Nissan 5 Speed RWD FS5W71C, FS5W71E and F4W71E Transmissions from years 1986-on SRK133A 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. The 1-2 rings are bigger than the 3-4 rings and they are all single-piece design. If you h ave a multi-piece desing 2nd gear ring that is a different kit. This kit comes with all the main roller bearings, counter roller bearings, input pocket needle, seals, front retainer gasket, and high quality synchro rings.