Case Trencher Turbo Charger

Case Trencher Turbo Charger parts list
Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	580L-II, 580 Super L-II*, 590 Super L-II, 686G-II, 688G-II, 960	Turbo Charger (Emissions-Certified)		J802798	$480.00	View Info

Replacement turbochargers for Case trenchers running the Cummins 4T390 engine, delivering forced induction to restore boost pressure, throttle response, and rated power.

Fits Models At A Glance

Cummins 4T390 Powered Trenchers: Case trenchers equipped with the Cummins 4T390 diesel engine

Key Notes

Application: Compresses intake air to maintain boost and rated horsepower under load
Engine Fit: Built for the Cummins 4T390 turbo diesel platform
Reference: Cross-references OEM turbocharger assembly J802798
Condition: New and used units available depending on inventory

Why Choose Broken Tractor

✅ Fast shipping from two US warehouse locations
✅ Verified fitment for Cummins 4T390 engines
✅ New and used options to fit any budget

Frequently Asked Questions

What turbocharger fits a Case trencher with a Cummins 4T390 engine?

Broken Tractor carries a replacement turbocharger built for Case trenchers powered by the Cummins 4T390 turbo diesel engine. It cross-references the OEM turbocharger assembly J802798, so matching that number is the easiest way to confirm you have the right unit. Because fitment can vary by model and serial number, check the part number on your existing turbo before ordering.

What is the part number for a Case trencher 4T390 turbo?

The turbocharger we offer for Case trenchers with the Cummins 4T390 engine cross-references OEM part number J802798. Compare that number to the tag or casing on your old turbocharger to make sure it matches. If the number is worn off or you are unsure, our parts team can help confirm fitment at (800) 909-7060.

What are the signs of a bad turbo on a Case trencher?

A worn turbocharger can leave the engine short on boost, which usually shows up as weak throttle response and a loss of power when the trencher is under load. The turbo compresses intake air to maintain boost pressure and rated horsepower, so when it falls off, the engine has to work harder to keep digging. Replacing it with a turbo that matches J802798 is meant to bring back boost pressure and rated power on the Cummins 4T390.