CATEngine Parts

260-7454 Expansion Tank — Cat 938H IT38H

This expansion tank is an integral part of the engine's cooling system, maintaining the correct coolant level and pressure. It is constructed from durable materials to withstand thermal cycling and pressure, offering superior performance compared to a cracked or leaking tank. Operators may notice coolant loss, frequent overheating, or visible coolant leaks under the machine if this tank is failing.

Expansion Tank – Part No 260-7454 – 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 TypeExpansion Tank
MaterialHigh-density polyethylene
ApplicationEngine cooling system
Service LifeReplace every 4,000 hours or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing expansion tank might be a low coolant level warning or visible coolant drips under the machine. If the tank develops cracks or leaks, the cooling system will lose pressure, leading to the engine running hotter than normal and potentially overheating. Continued operation with a compromised expansion tank risks severe engine damage from overheating.

Installation Tip

Ensure the cooling system is completely cool before draining and removing the old tank to avoid burns. Securely attach all hoses and clamps to prevent air ingress or coolant leaks.

Service Note

Inspect the radiator, thermostat, and water pump for leaks or proper operation when replacing the expansion tank.