Contains all components necessary for changing cylinder heads on 1996-2004 Mustang 4.6L 2V SOHC engine (May fit other make and model years 4.6L 2V SOHC engines) Kit includes multi-layer steel head gaskets, exhaust manifold gaskets and high-strength torque-to-yield head bolts Includes spacers that make this task significantly easier to remove and replace heads while on the car Highly recommended when installing M-6049-P46 and M-6050-P46 cylinder heads