(An educational, step-by-step guide for anyone purchasing used OEM final drives in South Africa) A final drive isn’t just another excavator part.It ’s the heart  of your machine’s travel system — and one of the most expensive components you’ll ever replace. Buying used OEM final drives is one of the smartest ways to save money… if  you know how to check their condition properly. Because let’s be honest:A final drive can look fine on the outside and still be an expensive disas