Case Backhoe Flywheel Ring Gear parts list
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480E, 480E LL, 480F, 480F LL, 580K, 580M, 580SE, 580SL Series II, 590SL Series II, 590SM, 584E, 585E, 586E, W11B, W14C, 550, 650, 450C, 455C, 650K, 750K, 1840, 1845C, 40XT, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT |
Flywheel Ring Gear (159 Teeth) |
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J901774 |
$48.00
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580K Phase III, 580SK, 580L, 580SL, 590 Turbo, 590SL, 580M Ser I, 58SM Ser I, 590SM Ser I, 570LXT, 570MXT Ser I, 550E, 550G, 550H, 650, 650G, 650H, 750H, 585G, 586G, 588G, LV80, U80 |
Flywheel with Ring Gear (159 Teeth) |
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J934937 |
$114.00
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650K, 750K, 850D, 855D, 850K, 1150E, 1155E, 1150G, 1150H, 1550, 680L, 780C, 780D, 688, 888, 1088, 9010, 880D, 9010B, 9020, 9020B, 9030, 9030B, 9040, 9040B, 9045B, CX130, CX160, CX210, CX240, CX290, 1085B, 1085C, 1086B, 1187C, W14B, W14C, W36, 621, 62 |
Flywheel Ring Gear (127-Teeth) |
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J905427 |
$74.00
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Replacement flywheels and flywheel ring gears for Case backhoe loaders, including complete flywheel assemblies with ring gear for Cummins-powered machines and standalone ring gears across the 480, 580, and 590 series.
Fits Models At A Glance
- 480 Series: 480E, 480E LL, 480F, 480F LL
- 580K Series: 580K, 580K Phase III, 580SK
- 580L Series: 580L, 580SL, 580SL Series II, 580SE
- 580M Series: 580M, 580M Ser I, 58SM Ser I
- 590 Series: 590 Turbo, 590SL, 590SL Series II, 590SM, 590SM Ser I
Key Notes
- Application: Engages the starter and transfers crankshaft rotation at engine start
- Configurations: Complete flywheel with ring gear for Cummins engines, plus standalone ring gears
- Condition: New and used options where available
- Fitment: Verify tooth count and engine before ordering
Why Choose Broken Tractor
- ✅ Wide Case backhoe coverage across multiple generations
- ✅ Fast shipping from two US locations
- ✅ Knowledgeable team to confirm correct fitment
Frequently Asked Questions
What flywheel ring gear fits a Case 580K backhoe?
Broken Tractor offers two options for the Case 580K family. The standalone ring gear, SKU J901774, is listed for the 580K. The complete flywheel with ring gear for Cummins engines, SKU J934937, is listed for the 580K Phase III and 580SK. Fitment depends on your engine and the ring gear tooth count, so check both before ordering.
Is there a complete flywheel with ring gear for a Case 580SL or 590 Turbo?
Yes, we carry a complete Case flywheel with ring gear for Cummins engines, SKU J934937. It is listed for the 580L, 580SL, 590 Turbo, 590SL, 580M Ser I and 590SM Ser I backhoes, along with the 580K Phase III and 580SK. Confirm that your machine has the Cummins engine before you order, because the assembly is built for Cummins-powered backhoes.
Which flywheel ring gear fits a Case 480E or 480F backhoe?
The flywheel ring gear SKU J901774 is listed for the Case 480E, 480E LL, 480F and 480F LL. The same ring gear is also listed for the 580K, 580M, 580SE, 580SL Series II, 590SL Series II and 590SM backhoes. Match the tooth count on your current ring gear before ordering.
Can I replace just the ring gear instead of the whole flywheel on a Case backhoe?
Yes, Broken Tractor sells standalone ring gears as well as complete flywheel assemblies with the ring gear already fitted. The standalone ring gears are SKU J901774 for 480, 580 and 590 series backhoes and SKU J905427 for the 680L, 780C and 780D loader backhoes. The complete assembly, SKU J934937, is made for Cummins-powered 580 and 590 series machines. New and used options are offered where available.
How do I make sure I order the right flywheel ring gear for my Case backhoe?
Check your engine and count the teeth on your current ring gear, then compare them with the part number and model fitment listed for each product. Ring gears are not the same across every Case backhoe, and the right one can vary by model and engine. Matching the part number on your old part is the most reliable check. If you are unsure, call (800) 909-7060 and the parts team can help confirm fitment.
