Keep the cooling system topped off and easy to monitor with the Dorman - HD Solutions Engine Coolant Reservoir 603-5140. It drops in as a direct-fit replacement for the 2006 IC Corporation 3000 Chassis, 2006-2007 IC Corporation 3000 IC, 2006-2008 IC Corporation RE Commercial, and 2006-2008 IC Corporation RE School Bus. The reservoir holds the engine coolant overflow and gives the system room to expand and contract as temperatures change, while letting you check the coolant level at a glance.
If a failed or leaking reservoir is the cause of your coolant loss, this replaces the original unit. Always diagnose the source of any coolant loss before replacing parts.
Interchange: 575.10337 · 3583605C4 · 507.448 · Manufacturer part number 603-5140. See the Buyer's Guide tab for the full list of applications.
This part cross-references / interchanges with the following part numbers:
What does this coolant reservoir do?
It stores coolant that expands out of the cooling system when hot and returns it as the engine cools, and it lets you check the coolant level during service.
Will this fit my vehicle?
It is a direct-fit replacement for the 2006 IC Corporation 3000 Chassis, 2006-2007 3000 IC, and 2006-2008 RE Commercial and RE School Bus. Check the Buyer's Guide tab to confirm your application.
What numbers does part 603-5140 interchange with?
It replaces 575.10337, 3583605C4, and 507.448. The manufacturer part number is 603-5140.
What are signs the reservoir may need replacing?
Cracks, leaks, low or dropping coolant level, and brittle or discolored plastic are signs this part may need replacing. Diagnose the source of any coolant loss first.
Is any hardware or coolant included?
The listing covers the coolant reservoir. Consult the vehicle service information for the correct fasteners, whether they may be reused, and the specified coolant.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
