When your excavator goes down, the clock starts ticking — and every minute of downtime costs you money. The pressure is on, and the temptation is real: you find a cheaper, non-OEM part online, it looks close enough, and you think, “How bad could it be?” Well… bad enough to cost you an engine, a final drive, or your next big contract. Mixing non-OEM (aftermarket) parts into an excavator designed with precise OEM tolerances is like putting cheap tyres on a Ferrari. It might rol