Add to Cart Quaife Fiat Stilo Quaife Atb Helical Lsd Differential, Qdh2K-17 $1,438.49 Quaife ATB Helical LSD differential for the Fiat Stilo is a direct replacement for the standard Fiat Stilo open differential. The Quaife ATB Helical LSD differential transforms your car’s performance. Unlike a conventional plate-style limited... $1,438.49 Add to Cart