ARP Cylinder Head Stud 12 Point/Hex Head Nuts Chromoly Black Oxide - Cadillac V8 RG20002 Steel mounts have been updated

Steel mounts have been updated and now fit the newer and original 302-351W small blocks

standard static flow design

GM Fullsize Truck 2019-21

Copper Core

size to appropriate bump spring cup step O

ARP Cylinder Head Stud 12 Point/Hex Head Nuts Chromoly Black Oxide - Cadillac V8 RG20002 Steel mounts have been updatedARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Cylinder Head Stud Kit 12