NOS ROUSH 3 BOLT CRANKSHAFT PULLEY / BOLT KIT FOR 2007-2008 FORD 5.4 3V F150 ROUSH SUPERCHARGER KIT. THIS KIT WAS AVAILABLE FOR USE WITH THE ROUSH 5.4 SUPERCHARGER KIT FOR APPLICATIONS THAT DID NOT HAVE THE 3 HOLE MOUNTING. IT IS A 2 PIECE KIT THAT INCLUDES THE PULLEY AND NEW CRANK BOLT.THIS PULLEY HAS BEEN STORED FOR 15-20 YEARS FROM A CLOSED PERFORMANCE SHOP. THIS NEW NOS PULLEY FITS OTHER 4.6 / 5.4 APPLICATIONS AS WELL.