Subaru Head Stud Kit - EJ DOHC Series

The ARP Subaru Head Stud Kit for EJ DOHC Series engines is designed for both automotive enthusiasts and professional mechanics who demand maximum cylinder head clamping force and reliability. This kit is essential for anyone looking to enhance the performance of their Subaru engine, whether it is stock or modified for higher boost levels.

By replacing factory head bolts with precision-engineered studs, the ARP kit ensures consistent preload under extreme conditions, such as high combustion pressures and heat cycling. The superior metallurgy and manufacturing tolerances of ARP studs provide a uniform clamping load distribution, which is critical for maintaining engine integrity during high-stress operations.

This head stud kit is particularly beneficial for those undertaking a full engine rebuild, head gasket replacement, or turbo upgrade, especially if they plan to exceed 300 horsepower. Installers should adhere to ARP's recommended torque sequence and specifications to ensure optimal performance and reliability.