In conclusion, there are four different sizes for auto A/C hose in the most common car air conditioning system. If the vehicle is a bus or coach, it will be a bigger A/C hose, like 7/8 inch and 1 1/8 inch. Make sure which part of A/C hose is broken, like hose from compressor to condenser, you can know the exactly hose size.

Safety Measures: During installation, ensure the air conditioning system is depressurized, and no refrigerant is present before disconnecting any components. Wear appropriate safety gear to protect against potential refrigerant exposure.

With a 20 oz canister, A/C Pro R134a is capable of filling most vehicle A/C systems completely. This means you can enjoy the cool comfort of your A/C system for longer periods without worrying about running out of refrigerant.

3. Next, locate the power steering hose that needs to be replaced. This hose will be connected to the power steering pump and the steering gear with hose clamps or fittings.