To overcome head
gasket failures that can occur in diesel engines employed
in truck and RV applications, industry leader ARP has introduced
extra heavy-duty head studs for the popular Ford, Dodge
and GM powerplants. These ARP studs are rated at 220,000
psi tensile strength, and provide the clamping force required
to keep cylinder heads from lifting due to higher combustion
pressures. The studs are manufactured in ARP's Santa Paula,
CA plant from proprietary ARP 2000 material, with threads
rolled after heat-treat to provide optimum fatigue strength.
They are centerless ground to assure perfect concentricity.
The ends of the studs are broached to facilitate easy installation.
This feature also enables the cylinder head to be removed
in tight quarters. Also included in each kit are heat-treated,
chrome-moly steel 12-point nuts and parallel-ground washers.
They are black oxide finished for extra durability.
Ultra-Torque Fastener Assembly Lubricant has been specifically
designed to reduce tension preload scatter and eliminate
the need to cycle high performance engine fasteners before
final installation. ARP Ultra-Torque far surpasses all requirements
offered by previous ARP lubricants in terms of fastener
preload repeatability and performance lubricating properties.