Cummins 4BT Cylinder Block 3903920
| Item | Specifications |
|---|---|
| Part No | 3903920 |
| Product Name | 4BT Bare Cylinder Block / Engine Block |
| Fit Engine | Cummins 4BT3.9, 4BTA3.9 Diesel Engine |
| Displacement | 3.9L |
| Cylinders | 4 Cylinders |
| Material | High‑strength Grey Cast Iron |
| Cross OE# | 4991816, 3938366, 5405079 |
| Net Weight | 95.00 KG |
| Gross Weight | 105.00 KG |
| Condition | New Aftermarket |
| Quality Standard | ISO‑9001, Pressure‑tested |
| Package | Seaworthy plywood export case |
| MOQ | 1 PC |
| Warranty | 12 Months |
Cummins 4BT Cylinder Block 3903920, Bare Engine Block for Cummins 4BT3.9 / 4BTA3.9 Diesel Engine
The 3903920 4BT cylinder block is the main cast‑iron bare housing for Cummins 4BT 3.9L four‑cylinder B‑series diesel engine. Manufactured with high‑strength grey cast iron, this bare block acts as the base carrier for crankshaft, pistons, cylinder head and all internal engine assemblies. Every 3903920 block goes through CNC precision machining and hydraulic pressure leakage testing, ideal for engine rebuild, overhaul and replacement for trucks, excavators, backhoe loaders and generator sets. Suitable for aftermarket replacement when original block cracks, bore wears or water jacket leaks occur。
Cross Reference OE numbers：3903920, 4991816, 3938366, 5405079
| CUMMINS | 4941116 | CYLINDER BLOCK | B3.3 |
| CUMMINS | 3903920/4991816/3934025/4089546 | CYLINDER BLOCK | 4BT3.9 |
| CUMMINS | 3928797/3935936/3905806/3905810 | CYLINDER BLOCK | 6BT5.9 |
| CUMMINS | 3935936/3935934/3916255 | CYLINDER BLOCK | 6BTAA |
| CUMMINS | 5293536 | CYLINDER BLOCK | ISB5.9 |
| CUMMINS | 5274410/4934322 | CYLINDER BLOCK | ISD4.5/ISBE |
| CUMMINS | 5302096/4946586 | CYLINDER BLOCK | ISD6.7 |
Remarks:
1).The Cylinder block we produced are suitable for the following Cummins models:
Engine Series: A2300, B3.3, QSB3.3, 4BT3.9, 6BT5.9, 6CT8.3, L8.9, L9.3, ISBE, ISDE, ISC8.3, ISL9, QSL9, ISM11, QSM11, L10, NTA855, N14, KTA19, KTA38, KTA50, QSK45, QSK60, QST30, QSX15, ISX15, VTA28, NH220, ISF2.8, IS3.8, QSF3.8, ISG11, ISG12.
2).If your need item can’t find in this list, please contact with us directly to check more information.
There is many photos and parts number can’t full show in this website.
3). We slso can do OEM and ODM ,If you have other brand require, we also can offer .
4). For any future information need or question require, please contact us to know more.
