null
CALL or TEXT (800) 909-7060

Cummins 4T390 Turbo Engine Overhaul Kit for Case 580E, 580K, 580 Super L, 550G, & more

SKU:
BEKC39T
FitsModel:
580E, 580 Super E, 580K, 580 Super K, 580L, 580 Super L, 590 Super L, 580M Series I, 580 Super M Series I, 450C, 550, 550E, 550G, 550H, 90XT, 95XT, 860, 960
ListDescription:
Engine Overhaul Kit (Cummins 4BT Turbo)
Case 4T390 Turbo Cummins Engine Overhaul Kit by Reliance
Part # BEKC39T

Fits Models At A Glance

  • Engine: Cummins 4BT Turbo, 390 cui (4T390)
  • Backhoes: 580E, 580 Super E, 580K, 580 Super K, 580L, 580 Super L, 590 Super L, 580M Series I, 580 Super M Series I
  • Dozers: 450C, 550, 550E, 550G, 550H
  • Skid Steers: 90XT, 95XT
  • Trenchers: 860, 960

Key Notes

  • Part Number(s): BEKC39T
  • Weight: 60 lbs
  • Application: Complete engine overhaul kit for the Cummins 4T390 turbo diesel engine used in Case backhoes, dozers, skid steers, and trenchers
  • Condition: Aftermarket replacement part
  • Manufacturer: Reliance
  • Bore: 4.0165"
  • Stroke: 4.724"
  • Rod Journal: 2.7160-2.7170"
  • Main Journal: 3.2672-3.2682"
  • Main Torque: 44, 88, 129 ft/lbs
  • Rod Torque: 22, 44 ft/lbs, +60 degrees
  • Ordering Note: Prior to ordering, you will need to know if you require oversize crankshaft bearings or pistons
  • No Turbo? If your machine does not have a turbo, we also offer a non-turbo version of this kit

Kit Includes:

  • Pistons
  • Piston Pins
  • Piston Rings
  • Cylinder Head Gasket Set
  • Complete Gasket Set with Seals
  • Rod and Main Bearings

Head Torque Sequence:

  • All bolts 66 ft/lbs
  • All bolts 66 ft/lbs again
  • Longest bolts only, tighten in sequence to 89 ft/lbs
  • Longest bolts only 89 ft/lbs again
  • All bolts +90 degrees

Why Choose Broken Tractor

  • One Kit Covers Your Complete Engine Rebuild - Pistons, rings, bearings, and full gasket sets arrive together so your rebuild stays on schedule.
  • Fast Shipping from a U.S.-Based Team - Orders are processed quickly to minimize your machine's downtime.
  • Real Parts Help When You Need It - Our knowledgeable staff can help confirm fitment and oversize requirements before you order.
$685.00

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.

Can’t Find What You’re Looking For?

Our knowledgeable staff will be happy to help you with any of your tractor, backhoe, dozer, or engine parts needs.

1-800-909-7060 Parts Request Form

FEATURED PRODUCTS

Shipping & Return Policy

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 in Two to Three days.

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.

Did you accidentally purchase the incorrect part? We offer returns and exchanges here at Broken Tractor. To proceed with a return, please call us toll free, and we will provide you with return authorization and a step by step return process for your convenience. We are more than happy to help you exchange your part for the correct one! Give us a call at 1-800-909-7060 and we would be pleased to help you.

Privacy Policy | Terms & Conditions

Building Quality Since 2006  |  Copyright © 2026 Broken Tractor LLC - All Rights Reserved


Product: Category: Brand: Head Title: Cummins 4T390 Turbo Engine Overhaul Kit | Broken Tractor