Upgrade your 1994-2003 Ford 7.3L Powerstroke engine with DIESELSITE Heavy Duty Head Studs, designed to provide exceptional strength and reliability. After installing an aftermarket performance turbo, the factory head bolts can stretch, leading to blown head gaskets. These head studs eliminate that risk by strengthening the top end of your engine. Constructed from 8740 steel with rolled threads and a proprietary element for enhanced durability, these studs have a tensile strength of over 220,000 psi!