1/2 Stud - 5.400 Long Broached w/1.250 Thread

The 1/2 Stud - 5.400 Long Broached w/1.250 Thread from ARP is a precision fastening component designed for high-performance engine builds where reliability under extreme loads is essential. These studs are crucial for critical engine assemblies, replacing weaker OEM fasteners in various applications, including supercharged, turbocharged, and naturally aspirated performance engines.

Manufactured from premium alloy steel and heat-treated to exacting specifications, ARP studs provide superior tensile strength and fatigue resistance compared to standard fasteners. The broached design ensures precise internal geometry, while the 1/2-inch diameter and 1.250-inch thread size optimize load distribution without over-stressing the mating bore. At 5.400 inches in overall length, this stud accommodates a wide range of engine block thicknesses and head gasket combinations.

Professional engine builders and serious enthusiasts rely on ARP's 1/2 studs for cylinder head fastening in applications where maintaining proper head gasket compression is critical. The controlled preload capability of these studs ensures consistent clamping force, even under thermal cycling and combustion pressures that could cause conventional bolts to relax.