Steel caged Gearbox bearings PG1 turbo £109.00 postage £8.00 These are the 4 main problem bearings in the gearbox, 2 for the differential (these collapse and the driveshaft pops out) and 2 for the input shaft (this is the cause of the rumble at idle which goes away when you depress the clutch) There are 3 other bearings in the gearbox but supply on these is very difficult so we cannot offer these.