ARP 153-4303 Ford EcoBoost Head Stud Kit - 3.5L V6 12-Point

The ARP 153-4303 is a high-performance 12-point head stud kit designed specifically for Ford 3.5L EcoBoost and 3.7L Cyclone V6 engines. This kit is essential for all high-performance applications, as factory head bolts can stretch under increased cylinder pressures from turbo upgrades, tuning, or track use.

Premium Construction and Materials:

• Manufactured from premium grade 8740 chrome moly alloy steel, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi
• Cold-forged to ensure molecular integrity and heat-treated prior to thread rolling and machining
• Thread rolled after heat-treat for superior fatigue strength—approximately ten times better than studs threaded before heat treatment
• Precision centerless-ground and thread-rolled to Mil-S-8879 specifications with black oxide finish for wear and corrosion protection

Complete Kit Includes:

• Oversized, dimpled hardened parallel washers for even load distribution
• 12-point nuts for accurate torque readings and easier installation
• Undercut stud design for more consistent clamping force
• Fastener yield strength of 220,000 psi

Because ARP studs are manufactured to such exacting tolerances, gaskets and cylinder heads glide into position and are perfectly aligned—essential for maintaining proper head gasket seal in forced induction applications. This kit provides the foundation for reliable power increases and is trusted by professional engine builders across all forms of motorsports.