Add to Cart Quaife Ford 7 1/2" Quaife Atb Differential, Qdf14Z €1,146.84 Quaife ATB Helical LSD differential for the Ford 7 1/2" is for a variety of models using a Ford 7 1/2" Differential casing. A direct replacement for the standard open differential, the Quaife ATB Helical LSD differential transforms your car’s... €1,146.84 Add to Cart