Lucas Fuse Box (4 fuse) - Replace your old fuse box with a NOS genuine Lucas one. Many electrical problems can be traced back to corroded clips or ones that have lost "temper". Easy replacement can cure many electrical problems. Moss part 162-510 also equal to RTC440A. While this fuse box will work on a late model MGB also see part 37552 which has a jumper between two terminals as used on late MGBs. Lucas - 7FJ series