Mercedes-Benz Passenger A9078302300 Refrigerant Line

Description

The Refrigerant Line is a high‑performance AC line used to transport refrigerant between the compressor and condenser in automotive HVAC systems. Designed for Mercedes-Benz Passenger vehicles, it offers precise pressure regulation and long‑term durability. With an MPN of A9078302300, the line measures 170 mm high, 350 mm wide, and 870 mm deep, and is manufactured in Germany.

Key Features & Benefits

This line basically carries the refrigerant – that’s the stuff that actually makes the cold air – between all the components of your air conditioning system. It's a sealed system, so the line needs to handle high pressure and stay leak – free. It's not just a simple tube, it's got fittings for connecting to the compressor, the condenser, the evaporator, and the receiver/dryer. Sometimes it includes an accumulator too, depending on the system. Think of it as the veins and arteries of your AC. The refrigerant goes through this line to get from one part of the system to another. It starts at the compressor where it's pressurized, then goes to the condenser to cool down, back to the receiver/dryer to filter out moisture, then to the expansion valve, and finally to the evaporator inside your dash where it absorbs heat. Then it cycles back to the compressor. It’s a closed loop and the line is a crucial part of that loop.

Symptoms, Risks & Replacements

Well, if this line develops a leak, your AC won’t cool effectively, or it won’t cool at all. It acts like a shield, keeping the refrigerant contained under pressure. You’ll notice if it's leaking because you'll see oily residue around the line where the leak is, and you’ll definitely notice the AC isn’t working as well. It's not something you want to put off, because the refrigerant itself can also be harmful to the environment if it escapes. You can find these parts pretty easily, Fixparts Online usually has a good selection, and replacing it restores proper cooling and prevents further damage to your AC system.

Warranty Information

Mercedes-Benz Passenger Refrigerant Line (MPN A9078302300) comes with a 1-year warranty.