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# 3978820 Main bearing
- URL: https://oemdieselparts.com/3978820-main-bearing-4/
- Published: 2025-12-15T08:07:15.000Z
- Updated: 2026-11-02T06:38:22.000Z
- Author: Energie Power Limited
- Tags: Genuine Quality, Cummins 4B, #Import 2026-10-20 05:37

![](https://oemdieselparts.com/content/images/2025/12/3978820-Main-bearing-DSC_0217-1.JPG)

Genuine Quality Cummins 4B 3978820 Main bearing

![](https://oemdieselparts.com/content/images/2025/12/3978820-main-bearing-DSC_0226-2.JPG)

Genuine Quality Cummins 4B 3978820 Main bearing