CATEngine Parts

120-9453 Thermostat — Cat 3608 3606

This is a thermostat that regulates the engine's operating temperature by controlling the flow of coolant through the radiator. It is manufactured to meet stringent OEM standards, ensuring precise temperature control, unlike a worn thermostat that may stick open or closed. Operators may notice the engine taking too long to warm up, running too cool, or conversely, overheating if this thermostat fails.

Thermostat – Part No 120-9453 – 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 TypeThermostat
MaterialMetal, Wax
ApplicationEngine cooling system
Service LifeReplace every 2,000 hrs or annually
CompatibilityCAT 3608, 3606, 3612, 3616, 345B
ConditionNew — OEM specification aftermarket

Failure Symptoms

The engine may take an unusually long time to reach its normal operating temperature, or it may consistently run cooler than specified. In other cases, the engine might overheat if the thermostat becomes stuck in the closed position. Prolonged operation outside the optimal temperature range can lead to reduced fuel efficiency and increased engine wear.

Installation Tip

Ensure the thermostat is installed with the spring-loaded end facing the engine block and that the jiggle pin (if present) is oriented correctly to allow air purging. Do not reuse the old gasket; always install a new one to prevent coolant leaks.

Service Note

Inspect the radiator hoses for softness or cracking, and check the water pump for any signs of leakage or bearing noise.