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Cummins 3909410 Rear Crankshaft Oil Seal
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| Part Name | Rear Crankshaft Oil Seal Service Kit |
|---|---|
| Material | PTFE / Rubber |
| Shaft Diameter | 130 mm |
| Outer Diameter | 150.44 mm |
| Seal Type | Dry Type with Speedi-Sleeve |
| Engine Series | B Series, C Series |
| Kit Contents | Seal, Wear Sleeve, Installation Hardware |
| Net Weight | 0.75 kg |
| Package Dimensions | 15 × 15 × 5 cm |
Manufacturer No.
- 3909410
- 5405392
- 3925529
- 3927682
- 3921265
- 3904087
- 3934486
- 3353978
- 4089342
- 4955566
- 3904323
- 3968563
- 3357693
OEM Part No.
- 3909410
- 5405392
- 3925529
- 3927682
- 3921265
- 3904087
- 3934486
- 3353978
- 4089342
- 4955566
- 3904323
- 3968563
- 3357693
Engine Part No.
- Cummins 4B3.9
- Cummins 4B4.5
- Cummins 4BT3.9
- Cummins 4ISBE
- Cummins 6B5.9
- Cummins 6BT5.9
- Cummins 6CT8.3
- Cummins 6CTA8.3
- Cummins 6CTAA8.3
- Cummins 6ISBE
- Cummins ISBE
- Cummins ISD6.7
- Cummins ISL9
- Cummins L9
- Cummins QSB4.5
- Cummins QSB6.7
- Cummins QSC8.3
- Cummins QSF3.8
- Cummins QSL9
- Cummins ISC
- Cummins ISL
- Cummins ISB
- Cummins QSB
Interchange No.
- PAI 136026
- Federal Mogul 39805
- FP Diesel FP3909410
- Fortpro F020621
- Fortpro F3909410
The Cummins 3909410 rear crankshaft oil seal service kit is designed to replace the rear crankshaft seal on B Series and C Series diesel engines.
The kit includes the primary PTFE or rubber lip seal and a Speedi-Sleeve wear ring for the crankshaft journal.
It addresses oil leakage at the rear of the crankshaft, maintaining crankcase pressure integrity and preventing contamination.
Compatible with engine displacements of 3.9L, 5.9L, 6.7L, and 8.3L across industrial, automotive, marine, and power generation applications.
The seal features a shaft diameter of 130 mm and an outer diameter of 150.44 mm.
Installation requires the included wear sleeve to ensure proper sealing surface on the crankshaft.
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