Cummins 4BT/4BTA3.9 spare parts catalog
| Part name (DCEC) | Part No. (DCEC) | Qty. | Part name (DCEC) | Part No. (DCEC) | Qty. |
| Piston | 3907163 | 4 pc | Bearing, Connecting Rod | 3901170 | 1 set |
| Piston | 3907158 | 4 pc | Rod, Engine Connecting | 3942581 | 4 pc |
| Piston | 3926631 | 4 pc | Connection, Tub Oil Drain | 3974113 | 1 pc |
| piston, engine | 3928673 | 1 pc | Connection, Tub Oil Drain | 3975061 | 1 pc |
| piston, engine | 3928674 | 1 pc | crankshaft, engine | 3929036 | 1 pc |
| Kit, engine piston | 3802764 | 6 pc | crankshaft, engine | 3905619 | 1 pc |
| Kit, engine piston | 3802747 | 6 pc | Gear, Camshaft | 3901258 | 1 pc |
| set, piston ring | 3802746 | 1 pc | Gear, Crankshaft | 3929027 | 1 pc |
| Ring, Piston | 3802421 | 4 set | Gear, Camshaft | 3901258 | 1 pc |
| Pin, Piston | 3901793 | 4 pc | Gear, Camshaft | 3907431 | 1 pc |
| Pin, Piston | 3934047 | 4 pc | crankshaft, assembly | 3905730 | 1 pc |
| nozzle, piston cooling | 3930139 | 4 pc | bearing, crankshaft thrust | 3906230 | 1 pc |
| bearing, main | 3929021 | 5 pc | Support, Camshaft Thrust | 3927155 | 1 pc |
| bearing, main | 3929016 | 4 pc | Bushing, Camshaft | 3901306 | 1 pc |
| bearing, main | 3901090 | 6 pc | Bushing | 3901306 | 1 pc |
| bearing, main | 3901150 | 7 pc | Bushing | 3941476 | 4 pc |
| Cap, main bearing | 3900967 | 5 pc | Rod, Push | 3904679 | 8 pc |
| set, main bearing(0.25) | 3802071 | 1 pc | Cylinder Head | 3966448 | 1 pc |
| set, main bearing(std) | 3802070 | 1 pc | Block, Cylinder | 3903920 | 1 pc |
| bearing, crankshaft thrust | 3927772 | 1 pc | Block, Cylinder | 3928793 | 1 pc |
| bearing, connecting rod | 3901171 | 0.25 pc | Block, Cylinder | 3928787 | 1 pc |
| bearing, connecting rod | 3901172 | 0.5 pc | Turbocharger 160 | 3528747 | 1 pc |
| bearing, connecting rod | 3901173 | 0.75 pc | Gasket, Turbocharger | 3901356 | 1 pc |
| bearing, connecting rod | 3901174 | 1 pc | gasket, cover plate | 3931348 | 1 pc |
| plate, cover | 3904046 | 1 pc | Valve, Intake | 3901117 | 4 pc |
| Gasket, Valve Cover | 3902666 | 4 pc | Tappet, Valve | 3931623 | 8 pc |
| Head, Gasket | 3921393 | 1 pc | Oil Seal, Valve | 3959912 | 8 pc |
| Gasket, Int, Manifold Cover | 3938152 | 1 pc | Collet Valve | 3900250 | 16 pc |
| Gasket, Oil Pan | 3959052 | Seal, Oil Front | 3900709 | 1 pc | |
| Gasket, Exh Collector | 3929881 | 4 pc | Seal, Oil Back | 3925529 | 1 pc |
| Valve, Exhaust | 3901607 | 4 pc | Cooler, Oil | 3921558 | 1 pc |
| Screw, Hex Flange Head Cap | 3930249 | 8 pc | Ring, Retaining | 3901706 | 8 pc |
| Sleeve, salvage | 3904166 | 4 pc | Housing, Flywheel | 3975179 | |
| Rocker | 3934920 | 4 pc | Air Compressor | 3974548 | 1 pc |
| Water Pump | 3960342 | 1 pc | Starter Motor Euro II | 4934622 | 1 pc |
| Starter Motor Euro I | 4935789 | 1 pc |
