CATEngine Parts

171-8710-3e-6440 Coolant Flow Switch — Cat 3306 3406

This is a CAT Coolant Flow Switch, an essential sensor that monitors the coolant temperature and flow rate within the engine's cooling system. It is built to OEM standards, ensuring accurate readings and reliable operation unlike a faulty switch that may provide incorrect data or fail to activate. Operators might observe overheating warnings, a non-functional temperature gauge, or the engine protection system engaging if this switch is malfunctioning.

Coolant Flow Switch – Part No 171-8710-3e-6440 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

;

Related CAT Parts

From the same category — may also be needed

CTP1654262-iKCK4
Complete Engine Kit
560-6100-593-5342
Alternator
236-4610
Rocker Switch
2297188
Engine Parts Component
4n-0311
Radiator
6e-6472
Hydraulic Pump

Browse all CAT Engine Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 TypeCoolant Flow Switch
MaterialBrass, plastic
ApplicationEngine cooling system
Service LifeReplace based on inspection or failure
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing coolant flow switch may initially cause intermittent or inaccurate temperature readings on the dashboard gauge. If left unaddressed, it can lead to the engine protection system not triggering warnings, potentially resulting in overheating and damage. The worst consequence is undetected overheating causing severe engine component failure.

Installation Tip

Ensure the engine coolant is drained to a level below the switch port before attempting removal. Overtightening the new switch can strip the threads in the engine block or manifold.

Service Note

Inspect the engine coolant level and condition, as well as the radiator and hoses, when replacing the coolant flow switch.