Since 1968, ARP (Automotive Racing Products) has been the undisputed world leader in high-performance automotive fasteners. Based in Ventura, California, ARP manufactures absolutely critical components—from cylinder head studs and main bolts to driveline fasteners—used by virtually every top professional engine builder in drag racing, NASCAR, and Formula 1. By utilizing aerospace-grade alloys like ARP2000® and Custom Age 625+® and employing proprietary thread-rolling processes, ARP fasteners provide the extraordinary clamping force and tensile strength required to keep high-horsepower engines together.

• Unmatched Tensile Strength: Fasteners rated far beyond OEM specifications to handle extreme cylinder pressures and boost levels.

• Aerospace-Grade Materials: Manufactured from premium alloys including 8740 chromoly, ARP2000, and L19.

• Precision Thread Rolling: Threads are rolled after heat treatment for maximum fatigue strength and durability under stress.

• Zero-Defect Manufacturing: Strictly controlled in-house manufacturing in the USA ensures absolute reliability for engine builders.

Secure your engine's internal components and prevent catastrophic failure with the legendary strength of ARP fasteners.