MINI A+ IDLER GEAR SHIM .138/.139" (BLUE)
DAM4825- MINI A+ IDLER GEAR SHIM .138/.139" (BLUE)
These are the later type spec which rover superseded to when upgrading the idler gear material on injection cars. see workshop manual for shimming details.
Quantity required per gearbox is 2 but idler gear requires shimming for correct clearance 3-6 thou as per workshop manuals but 3 thou for road and 4 thou for race is found to be reliable.