1997-2000 BMW 5 Series 2.8 M52 A/C Line
Specifications
Donor year
1998
Body style
Sedan
Fuel
Gas
Engine size
2.8 L
Engine code
M52
Engine type
2.8L I6
Drivetrain
RWD
About this part
Also known as
Air Conditioning Hose
A/C Refrigerant Line
Freon Pipe
HVAC Line
Suction Line
Discharge Hose
Liquid Line
What this part does
The A/C line serves as the physical transport network for refrigerant and lubricating oil traveling between the compressor, condenser, receiver drier, and evaporator. Routed throughout the engine bay and securely clamped against chassis components, these specialized hoses are designed to withstand extreme system pressures and significant temperature fluctuations. When a refrigerant hose fails, develops pinhole leaks, or suffers from internal rubber degradation, the climate control system loses its pressurized charge. This results in an immediate loss of cabin cooling and can potentially damage the compressor due to lubricant starvation.
Fits these vehicles
| Make | Model | Years | Engine |
|---|---|---|---|
| BMW | 528i (E39) | 1997-2000 | 2.8L I6 |
Before you order
A/C systems consist of multiple specific hoses, generally divided into high-pressure (thinner liquid and discharge lines) and low-pressure (thicker suction lines) circuits. Carefully compare the aluminum hard-pipe bends, bracket locations, and fitting angles of this piece to your original part, as routing is highly specific to the M52 engine bay layout. You must replace all connection O-rings with new, correctly sized green HNBR seals coated in PAG oil prior to installation. Ensure the system is properly vacuum-tested and flushed before adding new refrigerant to prevent premature failure.
