Boosted builds require stronger parts. A high performance head stud kit is needed to keep your head down when its under excess engine pressure created from aftermarket applications. The same stud kit from our vendor has been tested and proven on many 1000rwhp vehicles. If you are looking at pushing more boost on your barra fitted engine, don't cheap out on your fasteners holding your engine together. Made from top-shelf materials, this is a full set of heavy duty cylinder head fasteners, they are made from aircraft quality high tensile strength chromoly steel and cold-forged to ensure molecular integrity.They are heat-treated prior to thread rolling and machining and are rated at an impressive 220,000 psi. All kits come complete with 12 point nuts and hardened parallel over-sized washers for an even load distribution and accurate torque readings. 14 x Over sized washers. 14 x 12 Point head nuts. Ford Falcon BA Turbo XR6 / F6. Ford Falcon BF Turbo XR6 / F6. Ford Falcon FG Turbo XR6 / F6. Ford Falcon FGX Turbo XR6 / F6. Suit Ford 6 Cyl 4.0L (XR6) with the 4.0L Barra motor. This item is in the category "Vehicle Parts & Accessories\Car & Truck Parts & Accessories\Engines & Engine Parts\Cylinder Heads". The seller is "antzperformance-com-au" and is located in this country: AU. This item can be shipped worldwide.