nut, thumb, hood attaching - PCM GM engines

for attaching engine covers

nut, thumb, hood attaching - PCM GM engines NOTES: R017083 IS USED ON THE 5.7 MPI NON-CATALYST ENGINE HOODS - IT IS 3/4 INCH IN HEIGHT R017083A IS USED ON THE  5.0/5.7 MPI CATALYST ENGINE HOODS - IT IS 3/8 INCH IN HEIGHT