CATEngine Parts

420-1395 Thermostat — Cat 950

This is a high-quality thermostat designed to regulate engine coolant temperature within the optimal operating range for CAT C7 and C6.6 engines. It ensures precise temperature control, preventing overheating or undercooling, unlike a worn unit that may stick open or closed. Operators may notice a fluctuating temperature gauge, increased exhaust smoke, or a loss of engine power when this component fails.

Thermostat – Part No 420-1395 – 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 TypeEngine Thermostat
MaterialMetal alloy and rubber seal
ApplicationEngine cooling system
Service LifeReplace every 2,000 hours or 2 years
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing thermostat may cause the engine to run too cool, leading to poor fuel economy and increased emissions. If it sticks closed, the engine can quickly overheat, potentially causing severe internal damage. Operators might observe a consistently low or high temperature gauge reading.

Installation Tip

Ensure the engine block sealing surface is clean and free of debris before installing the new thermostat. Avoid overtightening the thermostat housing bolts, which can distort the housing and cause leaks.

Service Note

Inspect the radiator hoses and water pump for signs of wear or leaks when replacing the thermostat.