PPE Cylinder Head Studs are precision centerless-ground for accuracy. Thread-rolled to Mil-S-8879 specifications for increased strength while reducing stress at the threads. Hardened parallel washers for uniform load distribution and accurate torque readings. It is highly recommended to boost levels of 45 psi and higher.
With an independently tested and verified tensile strength of over 231,900 psi, these Studs out-perform even the most venerable manufacturer.
Each kit comes with hardened parallel washers, and nuts for uniform load distribution, and accurate torque readings.