CATEngine Parts

153-5955-153-5964 Water Pump Thermostat Kit — Cat 3003 301

This is a Water Pump Thermostat Kit, which regulates engine operating temperature by controlling coolant flow. It is manufactured to meet stringent OEM standards, ensuring precise temperature regulation and reliable operation compared to a worn or faulty unit. Operators may notice the engine running too hot or too cold, or fluctuating temperature readings on the gauge when this kit fails.

Water Pump Thermostat Kit – Part No 153-5955-153-5964 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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 Kit
MaterialMetal, Rubber
ApplicationEngine cooling system
Service LifeReplace every 2,000 hrs or annually
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A malfunctioning thermostat may initially cause the engine temperature gauge to read higher or lower than normal. If the thermostat sticks closed, the engine can quickly overheat, leading to potential internal damage. If it sticks open, the engine may run too cool, resulting in poor fuel efficiency and increased wear.

Installation Tip

Always drain the coolant to the appropriate level before removing the old thermostat to prevent spills. Ensure the new thermostat is oriented correctly according to the manufacturer's instructions, as improper installation can impede coolant flow.

Service Note

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