I think I need a new starter for my 1971 ford 4500 tlb. It's a 3 cylinder diesel Do I get the 5" or 4 1/2" Anyone know the part #?
Go to Messicks.com and look up the part number for the diesel starter.
You need to remove yours and measure it. click on ---> Ford Parts Boo k
Not sure about the diameter of the starter but Dixie lists these as being a direct replacement for the 4 1/2 and 5 inch diameter starters. https://www.dixie-electric.com/asrpic/TB/TB25-260-62157.pdf