VolvoCooling System

21648708 Water Pump — Volvo FMX FE Series trucks — FH400

This water pump is essential for circulating coolant through the engine and radiator, maintaining optimal operating temperatures and preventing overheating. It is manufactured to meet rigorous OEM quality standards, providing reliable performance and longevity compared to a worn or leaking pump. Operators may notice symptoms such as a rapidly rising temperature gauge, coolant leaks under the vehicle, or a whining noise from the front of the engine.

Water Pump – Part No 21648708 – 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 TypeWater Pump
MaterialCast Iron and Steel
ApplicationEngine Cooling System
Service LifeReplace every 2,000-3,000 hrs or 3-5 years
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing water pump is often a coolant leak originating from the pump's weep hole or shaft seal, or a noticeable increase in engine operating temperature. If ignored, the pump can seize or the impeller can fail, leading to a complete loss of coolant circulation and rapid engine overheating. Severe overheating can cause significant engine damage, including warped cylinder heads or blown head gaskets.

Installation Tip

Thoroughly clean the engine block surface where the water pump mounts to ensure a perfect seal and prevent leaks. Never reuse the old water pump gasket or sealant; always use a new, high-quality gasket or appropriate sealant.

Service Note

When replacing the water pump, it is advisable to also replace the thermostat, drive belt, and inspect all coolant hoses for signs of wear or degradation.