From 1959 to 1972 6 cylinder fuel-injected engines as well as the 6.3 V8 only. If one day your pump starts leaking out the bottom plate or just won't spin this kit may help.
Push them over a hose and they act like a sealing end cap. Turn them around and push into a hole to act as a plug. Cut in half - use one piece for a splice between hoses.
For most 4 cylinder, 6 cylinder and V8 engines from 1963 to 1985. Made to remove the race on the end of the crankshaft when replacing the front crank seal.