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A/C Hoses Fittings for Nissan

As with all hydraulic hose, and fitting components, A/C parts are designed to handle the pressures and temperatures a vehicle will emit during operation. When the time comes to repair or replace the hydraulic hoses on your Nissan, you will have a wide selection of air conditioning hoses and fittings to choose from.

What are Nissan A/C hoses made from?

A hydraulic hose fitting consists of three parts: a tube that carries the fluids, a surrounding layer of reinforcement, and an outer layer for protection.

  • The tube: The inner parts are often rubber, thermoplastic, or Teflon. They are also compatible with the fluids used in your car, SUV, or truck air conditioning.
  • The inner layer: The reinforcement parts consist of one or more layers of braided or spiral-wound wire and durable yarns.
  • The outer layer: These protective parts of the hose are made of a thicker layer of abrasive- and oil-resistant materials.
What are the differences between low- and high-pressure hoses?

The differences between low-pressure fittings or their hoses and high-pressure fittings and their hoses is the location within the Nissan air conditioning system. The air conditioner in a vehicle is a closed loop hydraulic system, which means that the oils and refrigerants do not escape. The high-pressure hoses and fittings supply liquid refrigerants to the condenser and dryer within the hydraulic system. The low-pressure hoses and fittings return the refrigerants in a gaseous form from the evaporator to the compressor in the hydraulic system.

How do you replace a low-pressure hose on a Nissan?

No matter which fittings or hoses you need to replace in your A/C, follow the directions for correctly draining your air conditioning system. The following list covers the general steps to follow to replace a low-pressure hydraulic hose:

  1. Follow instructions for draining coolant and releasing pressure from the A/C hydraulic system.
  2. Disconnect the fittings on the hydraulic hose between the expansion valve and the A/C compressor.
  3. Install the new hydraulic hose and secure the fittings properly.
  4. Recharge the A/C system.
How do you find leaks on A/C fittings or hoses?

You can visually inspect the fittings and hoses for leaks, even if the Nissan air conditioning system is empty. You will be able to visibly see larger holes, rips, or splits. Smaller leaks can be spotted by looking for an oily residue on the hydraulic hoses and other system parts. Your air conditioning contains an oil as well as Freon in the closed-loop system. This oil will gather on the parts, fittings, or hoses near the leak.