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Engine Fan Belt & Tensioner Kit for Case 580K, 580 Super K, 590 Turbo – Cummins

SKU:
BT-CASE-BELT-TENS-KIT
FitsModel:
40XT, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT, 480E, 480E LL, 580E, 580 Super E, 580K, 580 Super K, 590 Turbo, 680L, 650, 650G, 750H, (750K Series I), 850D, 850E, 850G, 850H, (850K Series I), 855D, 855E, 1150E, 1150G, 1150H, 1155E, 1840, 584E, 585E
ListDescription:
Engine Belt & Tensioner Kit
Engine Fan Belt & Tensioner Kit for Case 580K, 580 Super K, 590 Turbo – Cummins
Part # BT-CASE-BELT-TENS-KIT

Squealing belts and sloppy tension - fixed together. Fan belt and tensioner for Cummins-equipped Case machines.

Fits Models At A Glance:

  • Case Backhoes: 480E, 480F, 580E, 580 Super E, 580K, 580 Super K, 580L, 580 Super L, 590 Turbo, 680K, 680L, 780C, 780D
  • Case Loader Landscapers: 480E LL, 480F LL,  
  • Case Dozers: 650, 650E, 650G, 650K Series 1, 750H, 750K Series 1, 850D, 850E, 850G, 850H, 850K, 855D, 855E, 1150E w/5.9 Cummins, 1150G, 1150H, 1155E
  • Case Skid Steers: 1840 After Serial Number JAF0118968, 40XT, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT
  • Case Forklifts: (584E, 585E, 586E Before  Serial Number JJG0251722)
  • Case Wheel Loaders: 621 

Note: Belt (J911559) fits models with Cummins engines only. Tensioner (J936203) fits Cummins 4.390 and 6.590 engines. The belt fitment list is a subset of the tensioner — confirm your engine type before ordering.

Key Notes:

  • Kit Includes: (1) Engine Fan Belt (J911559) + (1) Belt Tensioner (J936203)
  • Belt Part Number: J911559 | Replaces: J903099, J911559, 90500580
  • Tensioner Part Numbers: J936203, 47683084, 87326910, 87327014, J912246, J914086, J917485, J918944, J934817, J936201, J936202, J937553, J967188, 391420A1, 84552854, 87775124
  • Belt Weight: 1.0 lb
  • Tensioner Weight: 5.0 lbs (listed as 3.3 lbs in header — see flag below)
  • Combined Kit Weight: 6.0 lbs
  • Belt Type: Serpentine (Poly V-Belt)
  • Belt Material: Polyester cord construction
  • Belt Length: 62" inside / 62.63" outside
  • Belt Ribs: 8-rib
  • Belt Thickness: 0.18"
  • Engine Compatibility: Cummins 4.390 and 6.590 engines
  • Tensioner Function: Maintains proper serpentine belt tension for consistent drive performance
  • Condition: Aftermarket replacement parts

Why Choose Broken Tractor?

✅ Belt & Tensioner Together – Replace both at once to avoid a second service call when the worn tensioner takes out your new belt

✅ Cummins-Specific Fit – Engineered to the correct dimensions for Cummins 4.390 and 6.590 engine configurations across a wide range of Case equipment

✅ Fast Shipping from a U.S.-Based Team – Stocked and ready to ship so your machine is back running with minimal downtime

$82.00 $74.00
(You save $8.00)

Shipping calculated at checkout. If any item in your order is temporarily unavailable, we'll contact you to arrange a back-order or refund — whichever you prefer.

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