The Johnson 01-45187 replacement pump shaft is suitable for Johnson F5B-9 engine cooling pumps, including:

Johnson 10-24119, 10-24119-1, 10-24119-2, 10-24119-3, 10-24119-4, 10-24119-6, 10-24119-7, 10-24119-8, 10-35100-1 and 10-35231-1 pumps, as well as Johnson 10-24119-5 as used in Ford Lehman 4D50 / 4D61 engines.