8N1188V Fits Caterpillar Fits CAT Heavy Duty Cylinder Head w/ Valves D3304PC EngOne New Aftermarket Replacement Heavy Duty Cylinder Head with Valves Fits Caterpillar (Fits CAT) 3304PC Engine This aftermarket replacement cylinder head is designed for the Fits Caterpillar 3304PC (Pre Combustion Chamber) inline 4 cylinder diesel engine. Supplied loaded with valves, it fits the top of the cylinder block forming the combustion chamber and is used across a wide range of Fits Caterpillar (Fits CAT) construction, industrial, and marine