CATEngine Parts

539-5746 539-5746 — Cat

This is a critical engine component responsible for regulating the flow and temperature of coolant within the engine's cooling system. It ensures the engine operates within its optimal temperature range by opening and closing to allow coolant circulation. A malfunctioning thermostat can lead to engine overheating or under-cooling, impacting performance and potentially causing severe engine damage.

539-5746 – Part No 539-5746 – CAT Spare Part
Part Specifications
BrandCAT
CategorySpare 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

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypeThermostat
MaterialBrass and stainless steel
ApplicationEngine cooling system
Service LifeReplace every 2,000 hrs or 2 years
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

An early symptom of a faulty thermostat is inconsistent engine temperature readings, fluctuating between too cold and too hot. If the thermostat becomes stuck closed, the engine will rapidly overheat, leading to potential gasket failure or cylinder head warping. If stuck open, the engine may run too cool, resulting in poor fuel efficiency and increased wear.

Installation Tip

Before installing, ensure the thermostat housing and mating surfaces are thoroughly cleaned to guarantee a proper seal. Never reuse an old gasket; always install a new one with the new thermostat to prevent coolant leaks.

Service Note

When replacing the thermostat, it is crucial to inspect the radiator hoses for signs of swelling or cracking and check the coolant level and condition.