Defender Guide :
Suffix A or B uses a FRC5428, not cross drilled (26 teeth, 27mm wide)
Suffix C to F uses a FTC5089, cross drilled (26 teeth, 32.7mm wide)
Suffix G, 300 TDi or TD5 uses a FTC4962 cross drilled (26 teeth, 32.56mm wide)
Suffix G, TDCi uses a FTC4850 cross drilled (38 teeth)