Navistar Radiators – Browse Replacement Parts
navistar radiators
Navistar Aftermarket Radiators – Built to Perform, Ready to Ship
Keep your International® truck or IC Bus® running at peak performance with reliable replacement radiators from Active Radiator — your nationwide source for aftermarket Navistar cooling solutions.
Whether you’re maintaining a fleet of International® commercial trucks, IC Bus® school buses, or legacy Workhorse chassis, our extensive inventory of high-quality radiators ensures you’ll find exactly what you need to stay on the road and out of the shop.
Supported Applications
International commercial trucks (all series)
IC Bus school and commercial buses
Workhorse step vans and motorhome chassis
Navistar diesel engines and specialty vehicles
Why Choose Active Radiator for Navistar Replacements?
OEM Quality Fit & Performance
Nationwide Inventory & Fast Shipping
Custom Fabrication for Hard-to-Find Parts
Expert Support
Get Back on the Road — Contact Us Today
Don’t let a cooling issue sideline your operation. Trust Active Radiator for top-tier Navistar replacement radiators, unmatched service, and nationwide coverage.
Call us now or request a quote online to find your part today.
| Part Number | Height | Width | Depth | Filler Neck | Product | Inlet | Outlet | Oil Cooler |
|---|---|---|---|---|---|---|---|---|
| 640120 | 29.75 | 26.3125 | 2.25 | None | Radiator | Center | Right | Bottom |
| 640121 | 35.25 | 40.5 | 2.25 | None | Radiator | Left | Right | Bottom Grill Side |
| 640122 | 38.5 | 40.5 | 2.25 | None | Radiator | Left | right | Bottom Grill Side |
| 640123 | 38.5 | 40.5 | 2.25 | None | Radiator | Left | Right | Bottom Grill Side |
| 640125 | 34 | 39.5 | 2.25 | None | Radiator | Left | Right | Bottom |
| 640127 | 27 | 12.25 | 2.25 | None | Radiator | Center | Right | Grill Side |