Add to Cart Quaife Alfa Romeo 156 Gta Quaife Atb Helical Lsd Differential, Qdh6E-2 $978.09 Quaife ATB Helical LSD differential for Alfa Romeo 156 GTA is a direct replacement for the standard Alfa Romeo open differential. The Quaife ATB Helical LSD differential transforms your car’s performance. Unlike a conventional plate-style limited slip... $978.09 Add to Cart