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Quote reference: Part No. 378-1255
Need help identifying this part?Engine Radiator
Product Tags: Radiator 378-1255 Cat, 3781255
Caterpillar Heat-exchange component 378-1255 is listed under source title “Radiator”. It is classified for Batch 6 as heat-exchange component within the engine cooling or charge-air cooling system. The source record does not establish an exact engine model. Confirm the complete engine model, serial number, arrangement, and installed reference before ordering.
A heat-exchange component transfers heat from engine coolant, oil, fuel, or compressed intake air to another cooling medium. Core construction, flow arrangement, pressure rating, connections, and capacity must match the application.
Hot and cool streams pass through separated passages, allowing heat to cross the conducting surfaces without the fluids mixing. Deposits, corrosion, leakage, or restricted flow reduce heat-transfer performance.
| Manufacturer / brand | Caterpillar |
|---|---|
| Part number | 378-1255 |
| Component category | Heat-exchange component |
| System | Engine cooling or charge-air cooling |
| Evidence level | C — Component identity only |
| Engine application | Not established by the supplied record |
| Observation | Possible significance |
|---|---|
| Increasing operating or charge-air temperature | May involve flow, fouling, air locks, controls, pumps, or exchanger condition. |
| Cross-contamination between fluids | Can indicate an internal leak and requires immediate investigation. |
| External leakage or corrosion | Requires inspection of the core, covers, seals, and connections. |
| Loss of pressure or reduced performance | May result from restriction, leakage, or system-control problems. |
These observations are inspection triggers rather than a confirmed diagnosis. Evaluate the complete engine system and follow the applicable manufacturer service information.
Compatibility notice: Verify 378-1255 against serial-number-specific parts documentation before purchase or installation. Do not select the component by appearance or part-number similarity alone.
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