Case Trencher Engine Crankshafts parts list
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310G, 350, 350B, 450, 450B, 450C, 455B, 455C, 550, 550E, 550G, 550H, 650, 650G, 850D, 850E, 850G, 855D, 855E, 480B, 480C, 480D, 480LL, 580, 580B, 580C, 580D, 580SD, 1835, 1835B, 1845, 1845B, 1845S, 584C, 584D, 585C, 585D, 586C, 586D, W11, DH5 |
Crankshaft Front Seal |
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A39110 |
$88.00
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580SE, 580K, 580SK, 580L, 580SL, 590T, 590SL, 580M, 580SM, 590SM, 570LXT, 570MXT, 584E, 585E, 586E, 585G, 586G, 588G, 450C, 550G, 550H, 650G, 650H, 650K, 750H, 750K, 1840, 1845C, 40XT, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT, W11B, W14B, 660, 760, 686G |
Crankshaft (Cummins 4B & 4BT) |
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3907803 |
$590.00
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Engine crankshafts and crankshaft front seals for Case trencher machines, covering Cummins 4-390 and 4T-390 engines along with Case 188 and 207 diesel engines used across trencher power units.
Fits Models At A Glance
- Cummins 4-390 / 4T-390: 660, 760
- Case 188 / 207 Diesel: DH5
Key Notes
- Application: Rotating assembly replacement for worn or damaged crankshafts
- Engine Coverage: Fits Cummins 4-390, 4T-390 and Case 188 / 207 diesel platforms
- Components: Includes full crankshaft assemblies and front seal service parts
- Condition: New and used options available depending on model
Why Choose Broken Tractor
- ✅ Verified fitment for Case trencher engines
- ✅ Fast shipping from two US locations
- ✅ Knowledgeable support for hard-to-find parts
Frequently Asked Questions
What Case trencher engines does the crankshaft (SKU 3907803) fit?
The Engine Crankshaft SKU 3907803 fits Cummins 4-390 and 4T-390 engines used in Case trencher power units, including the 660 and 760. Because this crankshaft is used across many Case platforms, confirm your engine model before ordering. If you are unsure, match the part number or check with our parts team.
Does Broken Tractor sell a crankshaft front seal for the Case 188 and 207 diesel engines?
Yes, we carry the Crankshaft Front Seal A39110 for Case 188 and 207 diesel engines. Among the trencher applications it covers the DH5. Confirm the seal matches your engine by verifying the part number A39110.
How do I know if my Case trencher crankshaft needs replacing?
A worn or damaged crankshaft is a rotating assembly problem and typically calls for full replacement rather than repair. Broken Tractor offers full crankshaft assemblies for Cummins 4-390 and 4T-390 engines and front seal service parts for Case 188 and 207 diesel engines. Match your engine to the correct part number to be sure you get the right rotating assembly.
Are the crankshafts new or used?
Broken Tractor offers both new and used crankshaft options depending on the model. Availability of each condition can vary by engine platform. To confirm which option fits your Case trencher engine, verify the part number or contact our parts team at (800) 909-7060.
