VolvoCooling System

9125129352 Air Compressor Head (Twin Cyl.) — Volvo FMX

This twin-cylinder air compressor head is the core component responsible for generating compressed air for the vehicle's air brake and suspension systems. It is manufactured to OEM quality specifications, ensuring efficient and reliable air production compared to a worn or damaged unit. Operators might observe symptoms such as the air system not building pressure, continuous compressor cycling, or audible air leaks from the compressor area.

Air Compressor Head (Twin Cyl.) – Part No 9125129352 – 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 TypeAir Compressor Head
MaterialCast Iron and Aluminum
ApplicationCompressed Air System
Service LifeReplace every 5-7 years or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing compressor head include the air system taking excessively long to build pressure or the compressor running continuously without reaching the cut-out pressure. If left unaddressed, the compressor may fail to generate any usable air pressure, leading to a complete loss of braking capability and potential system malfunctions. The most critical risk is the inability to safely operate the vehicle due to compromised braking.

Installation Tip

Ensure the mounting surfaces are perfectly clean and free of old gasket material to guarantee a proper seal and prevent air leaks. Do not overtighten the mounting bolts, as this can warp the compressor head or strip the threads.

Service Note

When replacing the air compressor head, it is essential to inspect the air dryer, governor, and all air lines for proper operation and leaks.