Add to Cart Quaife Caterham English Axle 22T Quaife Atb Helical Lsd Differential, Qdf5Z $2,006.27 Quaife ATB Helical LSD differential for Caterham English 22T (spline) is suitable for Caterham models with Ford English axle and 22 teeth spline. A direct replacement for the standard Caterham open differential, the Quaife ATB Helical LSD differential... $2,006.27 Add to Cart