CATEngine Parts

378-1255 Water Tank Radiator — Cat 305 5E2

This water tank radiator is an essential part of the engine's cooling system, designed to dissipate heat from the coolant. Manufactured to meet Caterpillar's stringent thermal performance and durability standards, it ensures efficient heat exchange unlike a clogged or leaking radiator that compromises cooling. Operators may notice the engine temperature gauge rising into the red zone, steam from the engine bay, or a persistent coolant smell when this component is failing.

Water Tank Radiator – Part No 378-1255 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeRadiator Water Tank
MaterialAluminum / Plastic Composite
ApplicationEngine Cooling System
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing radiator water tank is often a visible coolant leak, especially around the seams or connections. If the leak is not addressed, the engine's cooling efficiency will decrease, leading to overheating. Prolonged operation with an inadequate cooling system risks severe engine damage due to excessive heat.

Installation Tip

Ensure all sealing surfaces are clean and dry before attaching the new water tank to prevent leaks. Use the correct type and amount of sealant or gasket material as specified in the service manual.

Service Note

Inspect the radiator core, all hoses, and the water pump for leaks or signs of wear.