PART NO.  SPL.PAGE  DESCRIPTION                                                           
ACA5246   15.J.1    Seat -ball (2) (for inboard tie rod joint, steering, 1500)
ACA5246   16.J.1    Seat -ball (2) (inboard tie rod joint, rack assy, steering, 
                     1600 and 1600-MK-II)
ACA5246   TC.J.1    Seat -ball (2) (inboard tie rod joint, rack assy, steering, 
                     Twin Cam)

This little puck about 3/4-inch diameter and 1/4 inch thick provides a spherical ball seat for the inboard end of the MGA steering tie rod. It fits inside of the inboard steering ball socket assembly.

Install with:
ACA5246 Seat -ball
ACA5301 Shim, ball housung 0.003" (0.076 mm) -as req'd
ACA5302 Shim, ball housung 0.005" (0.127 mm) -as req'd
ACA5304 Housing -female ball
ACA6031 Housing -male ball
AHH6019 Rod -tie