Product Introduction C5547554 Air Compressor is the air supply pump for ISZ13 engine pneumatic brake system. Driven by engine crank power, it continuously compresses atmospheric air and delivers compressed air to air tank for brake control, air horn and other pneumatic accessories. This aftermarket replacement compressor fixes slow air charging, excessive oil carryover and air leakage caused by worn piston ring, cracked valve plate and degraded sealing gaskets of original units, ensuring stable air supply and reliable braking response for long-haul heavy freight vehicles.
Product Advantages High-strength cast cylinder body withstands cyclic pressure changes and high operating temperature. Precision piston and ring set minimizes oil consumption and reduces oil mixing into air circuit. Built-in valve group features quick response and stable compression efficiency. Each compressor undergoes air tightness and charging rate testing before shipment, OEM mounting layout for direct fitment and simple overhaul.
| Item | Parameter |
|---|---|
| Part Number | C5547554 |
| Product Name | Air Compressor / Air Brake Pump |
| Matching Engine | ISZ13 |
| Material | Cast Iron Cylinder + Alloy Valve Assembly |
| Feature | Compressed Air Supply, Stable Charging Efficiency |
| MOQ | Negotiable |
| Application | Truck Air Brake Pneumatic System |
Applicable Models Fit for heavy-duty commercial vehicles equipped with ISZ13 engine, widely used on highway bulk cargo transport vehicles with full air brake system.






FAQ
Q1: What leads to engine oil entering the air circuit from air compressor?
A1: Worn piston rings or scratched cylinder wall will cause lubricating oil to pass into the air chamber.
Q2: Do I need to clean the air dryer when replacing the air compressor?
A2: Yes, oil contamination may have polluted the dryer cartridge and requires inspection.
Q3: What is the impact if the compressor intake filter is blocked?
A3: Blocked intake reduces air output and increases the load on internal moving components.