PART NO.  SPL.PAGE  DESCRIPTION                                                           
ACG5147   15.D.2    Cover for fuel pump (rubber) -(fuel pump, 1500)
ACG5147   16.D.2    Cover -fuel pump -(rubber, fuel pump, 1600) -Fin.(C)93225
ACG5147   TC.D.2    Cover for fuel pump (rubber) -(fuel pump, fuel system, Twin Cam)

ACG5147 Cover for fuel pump (rubber). Discontinued May 1960, just about the time the Twin Cam ceased producition. Late production MGA did not have the cover, and it may be more bother than it's worth. All SU fuel pumps I've seen have a fiber washer on the power input stud, and a colored vinyl tape over the joint between the electrical end cover and body, seeming to be fairly well sealed without the rubber cover.