The center to center for the outside holes is 4 3/4" Black powder coated steel

and screw the terminal on

We have been making these fenders for years

and BSA motorcycles to mount 40mm 6 or 12 volt coils

this tool will save you a lot of headaches

#8308 CHR Complete Stock Hardware Kit - 1937-1973 Harley-Davidson 45 with Cast Iron Head - Chrome Plated Subcategory_Starters The center to center forComplete stock hardware kit for Harley Davidson 45 with cast iron heads 1937 1973, chrome plated. Each kit contains all the stock motor nuts, bolts, washers and studs for your motor. The kit includes primary cover screws, lifter base screws, circuit breaker screws, case studs and nuts, timing plug, cam cover screws, cylinder base nuts and washers, oil pump nuts and bolts, transmission side cover nuts and washers, transmission top screws, transmission