Add to Cart Quaife Ford Mondeo Mk3 St 2.5 Turbo (6-Speed - M66) Turbo Quaife Atb Helical Lsd Differential, Qdf13J-5 $1,426.31 Quaife ATB Helical LSD differential is suitable for the Ford Mondeo Mk3 ST 2.5 Turbo (6-speed - M66). A direct replacement for the standard Ford Mondeo Mk3 ST 2.5 Turbo open differential, the Quaife ATB Helical LSD differential transforms your car’s... $1,426.31 Add to Cart