... 4BT,6BT,,6CT,ISL(T375); Caterpillar 3304 and 3306 series.Short block, long block for Cummins 4BT, 6BT,6CT. Goods can be ... your partner:All of our goods are made by CNC machine, Have strict control on each procedure to make sure about ... the quality(Three-coordinate measuring machine)Production capacity: cylinder head:3000pcs/month, cylinder block:1000pcs/mont ...