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Case Cummins 4390 New Engine Long Block Plus

1840, 1845C, W11B
4390 Extended Engine Long Block - New
Case Cummins 4390 1840, 1845C, W11B NEW Engine Long Block PLUS - CS-4390LB+N
Fits Models:
Part # CS-4390LB+N


Case 4B/4BT NEW Long Block PLUS

  • Replaces Cummins 3.9L (4390 / 4T390) (Turbo or Non-Turbo)
  • Includes: Block, Crankshaft, Camshaft, Pistons, Cylinder Head, Connecting Rods, Oil Pump, Water Pump, Oil Pan, Front Timing Gear Housing, Front Cover, Filter Housing, Oil Cooler, Timing Gears, Valve Covers
  • Uses 7mm Injectors (Not Included)


  • Backhoes: 480E, 480F, 580 Super E, 580K, 580 Super K, 580L, 580 Super L, 590 Turbo, 590 Super L
  • Forklifts: 584E, 585E, 585G, 586E, 586G
  • Dozers: 450C, 455C, 550, 550E, 550G, 550H, 650, 650E, 650G
  • Skid Steer: 1840, 1845C
  • Wheel Loader: W11B

Models that use an Inline Injection Pump will need to reuse original front cover (Instructions and gaskets are included for changeover):

  • Backhoes: 580L II (After Ser # JJG0239260), 580 Super L II (After Ser # JJG0239361), 590 Super L II (After Ser # JJG0210575)
  • Forklifts: 584E (Late), 585E (Late), 586E (Late), 585G, 586G, 
  • Dozers: 550G After Serial# JJG0255794, 550H, 650G After Serial# JJG0216449
  • Skid Steer: 1840 (Late), 1845C After Serial # JAF0250483

Shipping charges are calculated at checkout.
Items are NOT guaranteed to be in stock at the time of order.
Refunds are offered if the item is on back-order.

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Do you need your part quickly? You're in luck! We have warehouses all over the country to ensure a quick and easy delivery time. Most of our parts ship from our warehouses the same day you place your order. And many times, orders are delivered the next business day!

Our in house parts are manufactured following strict quality standards in our warehouse in Ohio. Parts such as hydraulic cylinders, pins, bushings, sheet metal, track adjusters, booms and dipper sticks are all ready to ship same day that they are purchased! With less time to wait for your shipment, you will be able to get back to work as quickly as possible.

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