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SKU: 437421S
The 437421S is a Blue Bird and Thomas bus radiator with a solder on tank that replaces the OE solder-on version and mounts flat in the bus. It does not work where the OE radiator is a bolt-on. The unit has a 28.4375 x 27.5625 x 1.5625 inch core, one oil cooler, a 2 inch inlet and a 2 inch outlet. It interchanges with 17 other part numbers.
Use only green or yellow antifreeze in this radiator. Red antifreeze, or any extended-life (OAT) coolant, voids its warranty. Why coolant type matters
| Construction | Solder On Tank |
|---|---|
| OC Notes | (1) oil cooler |