Add to Cart Quaife Fiat Coupe Quaife Atb Helical Lsd Differential, Qdh2K-21 €786.31 Quaife ATB Helical LSD differential for the Fiat Coupe is a direct replacement for the standard Fiat Coupe open differential. The Quaife ATB Helical LSD differential transforms your car’s performance. Unlike a conventional plate-style limited... €786.31 Add to Cart