New, never opened. From Nihilo: The Nihilo Water Pump Impeller is machined from 6061 Billet Aluminum and will last the life of your motor. Our special blade design maximizes flow and limits cavetation. The stock Impeller is plastic and has been known to crack and spin on the shaft rendering your coolant system useless. The last thing you need in the middle of a race is an over heating motor from a cheap plastic part breaking. Don't take a chance order your Nihilo Billet Impeller today.