Differential Mount Billet Aluminum 240Z 260Z 280ZBillet aluminum rear differential mount for Datsun 240Z, 260Z and 280Z, 1970 1978. Made in the USA, solid machined mount which includes a mounting stud with hardware. This part mounts on the front of the differential. The original rubber mount is prone to fail with performance driving and age which will cause a "clunk" in the rear when accelerating. This solid mount keeps the rearend in place for street or racing. Works with R180 and R200 rearends.