ARP 2000 Ford XR6 Head Studs - M14mm x 1/2 inch diam (252-4301)

ARP2000 suits most high-performance builds. L19 offers higher strength but is sensitive to handling and corrosion. CA625+ is used for extreme cylinder pressure or rpm.

ARP torque values assume Ultra-Torque lubricant on threads and under the head. Without it, clamp load becomes unpredictable.

ARP 2000 head studs provide a significant increase in tensile strength compared to OEM head bolts, offering a 35% improvement. This enhanced strength helps maintain cylinder head clamping force under high boost and high RPM conditions, which is crucial for performance applications.

When installing the ARP 2000 head studs, ensure to use the included ARP Ultra-Torque lubricant on the threads and under the nuts. Follow ARP's recommended torque specifications for the M14 studs, typically around 85 ft-lb, but always refer to the latest ARP instructions for the most accurate guidance.

While the ARP 2000 head studs are designed to fit the Barra XR6, it's essential to ensure that the cylinder head and block surfaces are flat and within OEM specifications. If there are any irregularities, machining may be necessary to achieve a proper seal and prevent head gasket failure.

Yes, the ARP 2000 head studs can be used with aftermarket cylinder heads designed for the Barra XR6, provided the head accepts M14 x 1/2 inch diameter studs. Always verify compatibility with the specific head design and consult the manufacturer if unsure.

The parallel ground washers included with the ARP 2000 head studs ensure even load distribution across the cylinder head surface. This helps prevent warping and ensures a secure fit, which is particularly important in high-performance applications where thermal expansion can affect clamping force.