VolvoFilters

20972915 Air Drier Cartridge — Volvo FMX FE Series trucks — FH400

This is an air drier cartridge, also known as a desiccant cartridge, used in the vehicle's air brake system. Its primary function is to absorb moisture from the compressed air generated by the air compressor, preventing water from freezing in the brake lines during cold weather and protecting system components from corrosion. A saturated or failed cartridge will allow moisture into the system, leading to potential brake malfunction and component damage.

Air Drier Cartridge – Part No 20972915 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryFilters
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

Never run an engine without a filter — even briefly causes abrasive damage. Pre-fill fuel filters with clean fuel before fitting to reduce prime time. Replace O-rings on filter housings every second service. Record change dates on filter housing.

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

Part TypeAir Drier Cartridge
MaterialDesiccant material (e.g., molecular sieve)
ApplicationAir brake system
Service LifeReplace every 2-3 years or as recommended
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing air drier cartridge is often the presence of moisture or oil in the air system, which can be detected during maintenance. If left unaddressed, this can lead to intermittent brake application issues or a spongy brake pedal feel. The most critical consequence is the risk of air brake system freeze-up in cold temperatures, compromising braking safety.

Installation Tip

Ensure the air dryer housing is clean and that the new cartridge is seated correctly to prevent air leaks. Always follow the manufacturer's recommended torque specifications for the housing cap.

Service Note

Inspect the air tanks for water accumulation and check the air governor for proper operation.