CATEngine Parts

125-4812 Temperature Sender — Cat 320B

This temperature sender accurately monitors the engine coolant temperature, providing critical data to the engine control module or dashboard gauge. Manufactured with high-quality thermistors and durable housing, it ensures reliable readings unlike a faulty sender that may provide erratic or incorrect information. Operators might experience fluctuating or inaccurate temperature readings on the gauge, or the engine warning light may illuminate if this sensor fails.

Temperature Sender – Part No 125-4812 – 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 TypeTemperature Sender
MaterialBrass, electronic components
ApplicationEngine coolant temperature monitoring
Service LifeReplace as needed, typically during engine maintenance or if readings are suspect
CompatibilityCAT 3116, 3126 engines; Excavator 320B, 322B
ConditionNew — OEM specification aftermarket

Failure Symptoms

Erratic or incorrect engine temperature readings displayed on the instrument panel are the initial indicators of a failing sender. If ignored, the engine's cooling system may not respond correctly to actual temperature changes, potentially leading to overheating. Prolonged operation outside optimal temperature ranges can cause increased engine wear and reduced efficiency.

Installation Tip

Ensure the engine is completely cool before attempting to remove the old sender to avoid burns. Do not apply pipe thread sealant to the sensor threads unless specifically instructed, as it can interfere with electrical conductivity.

Service Note

While replacing the temperature sender, inspect the condition of the radiator hoses and coolant level for any signs of degradation or loss.