Harley 66-84 shovelhead rocker box valve cover ARP 12 point air craft nuts - Stainless mill Will work with 1958-1962 rear

Will work with 1958-1962 rear juice drum backing plate or 1963-1972 rear juice drum backing plate

These are heavy and require a carburetor support bracket

we suggest using some emery cloth sand paper

Aluminum pressure plate

Harley 66-84 shovelhead rocker box valve cover ARP 12 point air craft nuts - Stainless mill Will work with 1958-1962 rearNew high quality air craft style ARP hardware for your 66 84 big twin Shovelhead rocker boxes. Includes 18ea stainless 12 point nuts with non mar flange. These nuts are stronger than grade 8, ARP's "stainless 300" class with over 170,000psi tensile strength. Thick case hardened stainless washers are also included. Made in USA.