New old stock distributor upper replacement bushing for any factory 289, 302, Boss 302, 352, 390, 406, 427, 428, 428CJ distributors. Limited quantity on hand, Ford part number B8AH-12120-A. Inside diameter 0.467", outside diameter about 0.687". Length 1.757". These are pressed fit, please take care when removing and replacing. Our limited research shows that this bushing will fit the above distributors. However, we can only say that for 302 engines, you are good up until...