Add durability and boost with this 7.3 Cool Spool severe duty 360 thrust service kit and ET Blower III 6+6 billet H.O. compressor wheel. Thrust kit has a unique alloy that will stay at oil temp better than the steel cast bearing under severe use and will help prevent burn through under heavy towing and racing with a chip installed. All components are made and tested to be super durable at outrageous boost levels. P/N HPT36073ET. Made In North America!