CATEngine Parts

6i-4955-6i4955 Temperature Regulator 6I 4955 — Cat C32 C18

This temperature regulator, also known as a thermostat, controls the engine's operating temperature by regulating the flow of coolant through the radiator. It is manufactured to meet precise OEM specifications, ensuring accurate temperature regulation and preventing overheating or undercooling, unlike a faulty thermostat that can stick open or closed. Operators may observe the engine temperature gauge fluctuating erratically, running too hot, or taking too long to reach operating temperature when this regulator fails.

Temperature Regulator 6I 4955 – Part No 6i-4955-6i4955 – 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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Engine Parts Component

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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 TypeTemperature Regulator (Thermostat)
MaterialBrass, Stainless Steel, Wax Pellet
ApplicationEngine Cooling System
Service LifeReplace every 2,000 hrs or annually
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A primary symptom of a failing temperature regulator is erratic engine temperature readings, such as the gauge consistently running too high or too low. The engine may also take an unusually long time to warm up to its normal operating temperature. If the regulator sticks closed, it can lead to rapid overheating and potential engine damage.

Installation Tip

Ensure the thermostat is installed in the correct orientation, with the spring side typically facing towards the engine block. Do not force the thermostat into its housing if it does not seat properly; check for obstructions.

Service Note

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