The condition comes first. Ask for mileage records. Lower mileage usually means less wear and longer life. Ask if the unit was tested. Reputable suppliers always make sure to test and run diagnostics before shipping anything out. Check if it comes with a warranty. Even a 30- to 90-day window gives you a buffer to test and return if needed. Inspect for leaks. If buying in person, che... https://usedenginepart.com/