... .All parts are inspected by authorized equipment Cummins Piston Cummins Engine Piston Piston Ring Piston Pin Inner Packing: Standard Outer Packing: Cartons ... 1. Two-dies casting machine(Germany) 2. CNC lathe for piston production(USA) 3. Frequency-changing furnace(USA) and vertical aluminum ... 22R, 1RZ, 2L, 3L, 2RZ, 3RZ, 4K, 1Hz, 3VZ 4. MITSUBISHI: 4D30, 4D31, 4D31T, 4D32, 4D34, 4D40, 4D55, 4D56, 4G1, ...