5P8431 New Cylinder Head Gasket Kit for Several Fits Caterpillar Fits CAT ModelsOne New Aftermarket Replacement Cylinder Head Gasket Kit Fits Caterpillar (Fits CAT) 3400 Series Engines This upper cylinder head gasket kit is designed Fits Caterpillar (Fits CAT) 3400 Series diesel engines and provides all the critical seals and gaskets needed for a top end engine rebuild or head reseal. The kit covers the cylinder head, valve cover, manifold, turbocharger, and associated sealing surfaces on the 3400 Series engine family used in a