VolvoCooling System

20744733 Expansion Valve — Volvo FMX FE Series trucks — FH400

This expansion valve is a critical component of the vehicle's cooling system, regulating refrigerant flow to control temperature. It is manufactured to meet stringent OEM quality standards, ensuring superior performance and durability compared to worn or damaged units. Failure of the expansion valve can lead to inconsistent cabin temperatures, potential system over-pressurization, or reduced cooling efficiency, often noticed as fluctuating temperature gauges or inadequate climate control.

Expansion Valve – Part No 20744733 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryCooling System
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

Flush cooling system with distilled water before refilling. Use pre-mixed coolant — never plain water, which causes corrosion. Pressure-test system after any cooling repair. Check thermostat by immersing in hot water — should open at rated temperature.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeExpansion Valve
MaterialBrass and Steel
ApplicationAir Conditioning System
Service LifeReplace every 5 years or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing expansion valve may include inconsistent cabin cooling or the AC system cycling on and off erratically. If left unaddressed, the system's cooling capacity will significantly diminish, leading to uncomfortable temperatures and potential strain on the compressor. Continued operation with a faulty valve can result in evaporator icing or reduced overall system efficiency.

Installation Tip

Ensure the air conditioning system is properly evacuated before removing the old valve to prevent refrigerant loss and contamination. Avoid overtightening the valve fittings, as this can damage the threads or the valve body.

Service Note

When replacing the expansion valve, it is crucial to also replace the receiver-drier and consider flushing the AC system to remove any debris or moisture.