VolvoEngine Parts

21620172 Air Dryer — Volvo FH12 FH16

This is an air dryer, a vital component of the vehicle's air brake system responsible for removing moisture and contaminants from the compressed air. It prevents freezing, corrosion, and damage to brake valves and lines, ensuring reliable braking performance. A failed air dryer will allow moisture to enter the system, leading to potential brake system malfunctions and component wear.

Air Dryer – Part No 21620172 – Volvo Spare Part
Part Specifications
BrandVolvo
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

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypeAir Dryer
MaterialMetal and plastic housing with desiccant
ApplicationAir brake system
Service LifeReplace every 2-3 years or as recommended
CompatibilityVolvo FH12, FH16, FH 420, FH 460
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing air dryer include moisture or water accumulation in the air tanks or air lines, often indicated by a wet sound when draining tanks. If ignored, this can lead to freezing of brake components in cold weather, corrosion of valves and lines, and eventual brake system failure. The worst consequence is compromised braking capability, posing a significant safety risk.

Installation Tip

Ensure the air system is fully depressurized before disconnecting lines to prevent injury. Properly align the new dryer to avoid cross-threading the air fittings.

Service Note

When replacing the air dryer, inspect the air compressor output and the air tanks for any signs of excessive moisture or contamination.