Hello all, My car is not with me now so I can't make the reference check. I need to order a complete differential unit to solve the groaning noise but not sure if the 550 uses ZF or Graziano. I remember reading somewhere that the 575 uses Graziano but not the 550. Mine is a 1997 UK imported unit. If someone is kind enough to enlighten me. Appreciate your help. Regards
575/612/599 are all Graziano... considering the 550 gearbox is externally identical, it would be very surprising if they aren’t all Graziano. As an aside, the Graziano guys are great if you want to call them up for advice. Could give them a ring to check. Sent from my iPhone using FerrariChat
