This is the shackle bracket that is used on 1941-1956 models with the threaded shackles. The bracket has the threads in it like the original.
On MB, GPW, CJ2A, CJ3A, CJ3B and M38 models 4 are required. On Truck, Wagon and Sedan Delivery models 2 are required. Note this does not fit 2WD models.