Heat-Treated Stud Kit with Hardened Washers

The ARP 156-4101 Pro Series cylinder head stud kit provides enhanced strength and reliability for your Ford Modular 4.6L 2V & 4V engine. These studs are manufactured from 8740 chromoly material and feature a durable black oxide finish. ARP's Pro Series studs are cold-forged to guarantee molecular integrity and are heat-treated before being machined and thread-rolled. This kit ensures an even load distribution and accurate torque readings thanks to the inclusion of hardened parallel washers. The package contains 20 studs, designed to meet the rigorous demands of high-performance applications. ARP head studs are an excellent choice for engine builds, particularly those incorporating power adders. This kit is specifically designed to fit a wide range of Ford vehicles equipped with the 4.6L Modular engine. Applicable models include the Ford Club Wagon (1997-1998), Cougar (1994-1995), Crown Victoria (1992-2009), E-series (1997-2009), Excursion (2000-2005), Expedition (1997-2009), Explorer (2002-2009), F-150 (1997-2009), F-250 (1997-2009), F-350 (1999-2009), Grand Marquis (1992-2004), GT (2005-2006), Lobo (2001-2008), Mustang (1996-2009), Sport Trac (2007-2009), and Thunderbird (1994-1997).