Product Description
Build your own rebuild kit for the G56 manual transmission. One builder covers both versions: bearings, seals and synchro rings are common to AD and AE. Pick the overhaul kit that matches your case, then add only the parts you need.
Build your own G56 rebuild kit: choose the parts that match the transmission on your bench and leave out what you don't need. This builder has 8 option groups and 25 choices, all optional, so the kit holds only what you pick.
What you can choose
- Choose Your Overhaul Kit: BK474WS Master bearing & seal kit WITH synchro rings (1-2, 3-4, 5-6 middles + reverse set)
- Add Synchro rings: 312701-3 1-2 middle synchro ring; 312703-3 3-4 middle synchro ring; 312705-5 5-6 synchro ring; 312709K Reverse synchro ring set, complete 3-piece; 312709-3 Reverse inner synchro ring, carbon lined (single) - already included in 312709K 3-piece set; choose one or the other
- Add Synchro assemblies & hubs: D312701K 1-2 synchronizer assembly, complete
- Add Front bearing retainer: 312735 Input shaft (front) bearing retainer - replace cracked/worn retainer
- Add Gears & shafts: 312670 Input shaft, 27 teeth / 2 ID rings - 2005.5-2007 5.9L Cummins (AD ratio); 312670A Input shaft, 28 teeth / 3 ID rings - 2007.5-2018 6.7L Cummins (AE ratio); 312585-1 5-6 countershaft cluster gear 48T x 52T - 2005.5-2007 5.9L Cummins (AD ratio); 312585-1A 5-6 countershaft cluster gear 47T x 52T - 2007.5-2018 6.7L Cummins (AE ratio); 312586 6th gear, 23 teeth; 312584 4th gear, 28 teeth; 312583-1 3-4 cluster gear, 36T x 28T; 312587 Reverse gear, 42 teeth; 312678 Main shaft
- Add Individual bearings: 312267 Input rear tapered bearing (cup & cone); 312230 Countershaft (cluster) front bearing; D312276 6th gear needle bearing
- Add Seals & shims: 312080 Input shaft seal; 312072 Input pocket seal; 312489 Shifter boot seal; 476204K Input shim kit - 1 spacer + 3 shims (89.5 x 76.5 mm) for endplay setup
- Add Small parts: 424860K 1st gear snap ring kit (2)
