ARP - The world leader in fastener technology has just released new Pro Series main cap side bolt kits for late (2006-Present Cast Iron block) Ford Modular 4.6L & 5.4L V8 applications. All Pro Series side bolt kits feature 8740 chrome moly steel 12 point bolts that are heat treated prior to thread rolling and machining, and are nominally rated at 200,000 psi. Special purpose washers are included where necessary. Optimum design, enhanced reliability and increased strength are the main attributes of ARP's Pro Series main cap side bolt kits.