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ARP 11mm head stud kit to suit Subaru EJ20, EJ22 and EJ25 engines. This ARP head stud
kit is made from 8740 chromemoly steel, 190,000 psi tensile strength. It
is precision centerless ground and thread rolled to Mil-S-8879 specs.
The kit includes black oxide finish studs, hardened washers, and premium
grade nuts.
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