GM Parts & Services
Hoses-Lines
What do hoses and lines do?
Hoses and lines connect the elements of the air conditioning system. Hoses are flexible. Lines are hard. There are generally three main types of hoses & lines: Liquid hoses & lines, Suction hoses, and Discharge hoses. Liquid hoses & lines connect between the condenser and the expansion valve on the evaporator. Suction hoses connect the Compressor to the Evaporator. Discharge hoses connect the Compressor to the Condenser.
Why replace or restore my hoses & lines?
The air conditioning hoses & lines are the most common-wear items in the system and one of the first components to leak. Hose & line failure is as a result of many things, including normal system wear, system neglect such as not changing the filter-drier and extreme engine compartment temperatures. When converting to 134a, it is essential to change all rubber hoses to barrier hoses. More on Converting to 134a!
Replace all your hoses & lines!
Classic Auto Air has model specific hose & line kits for 1970-72 Chevelle-El Camino, 1966-72 Cutlass and 1979-81 Firebird-Trans Am. Click here for information on GM Hose Upgrade Kits.
Buy a new hose or line!
Classic Auto Air has replacement hoses and lines for Camaros, Chevelles, El Caminos, Monte Carlos, Cutlass & 442s, Firebirds, GTO-Lemans, Novas and Skylarks. Replace any single hose or line with our direct bolt-on replacements that require no modification whatsoever. Compatible with both R12 and 134a. More on Converting to 134a!
We have individual model specific hoses for:
- 1969-81 Camaros
- 1969-77 Chevelles & El Caminos
- 1970-77 Monte Carlos
- 1966-72 Cutlass-442’s
- 1967-81 Firebirds
- 1966-72 GTO-Lemans
- 1969-74 Novas
- 1966-69 Skylarks
Why restore my hoses & lines?
Because many hoses and lines are no longer made, Classic Auto Air offers restoration and duplication services.
Before
After
Typical Quad Hose Manifold
Before
After
Typical 1970 Skylark Discharge Hose
Before
After
Typical 1970 Skylark Suction Hose
Custom hose & line restoration services include:
- All rubber lines replaced with barrier hose
- Compatible with all refrigerants
- Fittings restored, replaced and/or repaired
- Painted fittings are repainted & unpainted steel fittings are zinc plated
- Pressure tested upon completion
Call or email for more information!
The compressor is a belt driven engine-mounted pump that serves as the heart of your car’s air conditioning system.
The condenser is the radiator-like device mounted in the front of the radiator in the engine compartment.
The evaporator is the coil that is located in a box (called an evaporator housing or plenum) mounted behind the dash or on the firewall in the engine compartment.
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