HMR HD L19 12mm Head stud kit for the 1989-1998 Dodge 5.9L 12 Valve Cummins Turbo Diesel
Recommended for applications exceeding 80 psi or small twin turbos producing not more than 80 psi.
The head bolt holes in the Cummins blocks are not tapped to the bottom. Haisleys has designed these studs with more threads for less stress to the block as well as the stud.
You will need a 12mm x 1.75 bottoming tap. If you do not have one, select the option and we can include one with your stud kit for a fee.
12mm L19 material
Hex broach for easy installation
HD washer and 12pt hardened nut
Same great Haisley Machine Design, now manufactured by ARP.