Ford V8 5.4L Modular ARP Main Stud Kit # 156-5901 Main Studs, 4-Bolt Main, Ford, 4.6/5.4L, 3V With Windage Tray, Kit Main Bolt Style:4-bolt Fastener Style:Stud Fastener Nut Style:Standard hex Works with Windage Tray:Yes Fastener Tensile Strength (psi):190,000 psi Nuts Included:Yes Washers Included:Yes Quantity:Sold as a kit. Notes:Does not include side bolts