Of all the diesel performance parts we sell, these little guys shouldnâ€™t be overlooked. Diesel engine head gaskets suffer brutal heat and force. Your Ford, RAM, or GM powerplant shows these parts no remorse, so head gasket failures are common. Thankfully, ARP fights back with a line of extra heavy-duty studs and nuts to handle the punishing conditions of higher combustion pressure. Shop below for main stud kits and head stud kits, made from proprietary ARP 2000 material, that keep cylinder heads clamped down. Shop with us for custom truck parts and receive free fast shipping on your order.